'IJS D 1. 6/2: c 56/997 B\SON 

DoD5200.1-PH 
DoD Guide to Marking Classified Documents 
April1997 

Assistant Secretary of Defense 
for 
Command, Control, Communications and Intelligence 


ASSISTANT SECRETARY OF DEFE~~~;?~V\/000L 6000 DEFENSE PENTAGON i'<UU"iSfTYAT WASHINGTON, DC 20301-6000 
...;,-,1.'ll•v')o
N 
DOCUMEN-r-,-.. . ..~ .
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COMMAND. CONTROL. I " tPOSITO; v COMMUNICATIONS. AND 
FOREWORD LIBRARY0433 RI 
INTEL.I..IGENCE 
This Pamphlet is reissued under the authority ofDoD Directive 5200.1, "Information 
Security Program," December 13, 1996. Itprescribes guidance through examples, on 
the markings for classified national security information. It supersedes the 1982, 
5200.1-PHguide. 
The guidance contained is derived from the E.O. 12598, "Classified National Security 
Information," its implementing instructions, and the marking guide developed by the 
Information Security Oversight Office. This pamphlet applies to the Office ofthe 
Secretary ofDefense (OSD), the Military Departments, the Chairman ofthe joint Chiefs 
ofStaff, the Defense Agencies, and the DoD Field Activities (hereafter referred to 
collectively as "the DoD Components"). 
Marking classified information serves several purposes in the Department ofDefense. It alerts holders to the presence ofclassified information, identifying the exact information or portion that needs protection; provides guidance for downgrading and declassification; gives the reason for the initial classification decision; and warns the holders ofany special access, controls, or safeguarding requirements. While we can not anticipate every marking situation, this pamphlet provides the basic ground rules that apply to all classified information, regardless ofthe media used. For specific situational needs, contact your agency's security officer for guidance. 
This Pamphlet is effective immediately for use by all the DoD Components. The Heads 
ofthe DoD Components may issue supplementary instructions when necessary to 
provide for unique requirements within their organizations. 
Send recommended changes to the Pamphlet to: 
Office ofthe Assistant Secretary ofDefense for Command, Control, 
Communications, and Intelligence 
Director, Security Programs 
6000 Defense Pentagon 
Washington, DC 20301-6000 
The DoD Components may obtain copies ofthis Pamphlet through their own 
Publications channels. Approved for public release; distribution unlimited. Authorized 
registered users may obtain copies ofthis Publication from the Defense Technical 
Information Center. 
Table of Contents 

Foreword......................................................................................... 1 Table of Contents............................................................................ 2 Security Reminders......................................................................... 3 Section 1 -Marking Originally Classified Documents .. . . .. . . .. . . . . . . .. 4 Portion Markings and Overall Classification Markings 5 "Classified by" and "Reason for Classification" Line . 8 "DeclassifY on" Line ... . . . . . . . . . . . .. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 9 "Exemption Categories" chart..................................... 10 Working Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electronically Transmitted Messages . . . . . . . .. . . . . . . . . . . . . . . . . . 12 Section 2 -Marking Derivatively Classified Documents . . . . . . . . . . . . . . 13 ClassifYing from "Multiple Sources" . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Marking from a "Classification Guide" . . . . . . . . . . . . . . . . . . . . .. 19 Section 3 -Marking Special Types oflnformation and Materials. 20 Classification Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Foreign Government Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Letters ofTransmittal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Atomic Energy Information........................................ 24 Classification by "Compilation".................................. 25 Special Access Programs............................................ 26 Section 4-Other............................................................................ 29 Automatic Declassification Instructions -25 yr. rule .. 29 Marking Information "Other Than" Documents........... 30 References . . . .. .. . . . . . .. .. . . . . . . . . .. . . . . . .. . . . . . . . . . . . . . .. .. . . . . . . . .. ... . . . . .. . . . . . . . . . . . . . . . . . . 34 Notes ............................................................................................... 35 
2 


Security Reminders 

A. 	Classification decisions are either original or derived. 
B. 	Only individuals occupying positions specifically authorized in writing may classifY documents originally. 
C. 	Only individuals with the appropriate security clearance, who are required by their work to generate classified source information, may classifY derivatively. 
D. 	There are three levels ofclassification, "TOP SECRET", "SECRET" and "CONFIDENTIAL." Do not use other terms, such as "Official Use Only," or "Administratively Confidential," to identifY classified national security information. 
E. 	Information shall not be classified for any reason unrelated to the protection ofnational security. 
F. 	Classifiers are responsible for assuring that information is appropriately classified and properly marked. The proper markings include declassification instructions. 
G. 	To have access to classified information, a person must have a security clearance at an appropriate level, a signed SF 312, "Classified Information Nondisclosure Agreement," and the "need-to-know." 
H. 	Individuals who believe that information in their possession is inappropriately classified, or inappropriately unclassified, are expected to bring their concerns to the attention oftheir security manager or the classifier ofthe information for resolution. 
I. 	Classified information shall not be discussed or read in public places. It should not be left unattended, even for a short time in automobiles, hotel rooms, private residences or public lockers. Only approved security containers are authorized for storage. 
J. 	Classified information shall not be discussed on non-secure telephones. "Talking around" is a dangerous practice and does not provide adequate protection to classified national security information. 
K. 	Notes, rough drafts, informal working papers, and other preliminary documents must be handled and destroyed as classified information. This is especially important with computer generated documents that often go through several revisions. Apply the markings as the document is being created. 
3 


SECTION 1-Marking "Originally Classified" Documents 
--Lb.


SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

date 
MEMORANDUM FOR DASD (I&S) l.a. 

SUBJECT: Classification Markings (U) / 
l.a. 
~U) This is an example of a document that contains originally classified information. Standard markings are required for all documents as shown here. These markings include: 
a. 
(U) Portion marking(s) for each section of a document to reflect the classification of the information. When using subsections such as shown here, individual markings are used. When subsections are not marked, the information is protected at the level of protection shown by the overall section. 

b. (U) Overall markings conspicuously using larger font size or bold. 

c. 
(U) A "Classified by" line that includes the name or personal identifier and position of the originator. 

d. 
(S) A reason for classification as shown on page 8 of this guide. 

e. 
(U) A "DeclassifY on" line that indicates the following: 

(1) 
The date or event for declassification not to exceed 10 years. 

(2) 
The date that is 10 years from the date of the original decision. 

(3) 
An extension beyond the initial 10 years of classification. 

(
4) An authorized and applicable exemption category(ies) as described on page 10 of this guide. 






2. (S) Ifthis paragraph contained "Secret" information, the portion would be marked with the designation "S" in parentheses. Ifthe paragraph contained "Confidential" information, the portion would be marked with the designation "C" in parentheses. 
---l.c. 
Classified by: Emmett Paige, Jr. 
ASD(C3I) --l.d. 
Reason: 1.5 (a) and (d) ---l.e. 
Declassify on: December 31, XXXX 


SECRET 
Note: A line followed by a reference number, throughout this pamphlet, cites the paragraph number found on the same page. 
4 


Portion Markings and Overall Classification Marking 
3
SECRET--· 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

date 
MEMORANDUM FOR DASD (I&S) 
__1. 
1. SUBJECT: Portion Markings and Overall Classification Marking (U) 
~ 
1. (U) The first step in marking a document is to identify the classification level ofeach portion contained in the document. This includes each paragraph, subjects, and titles. Only by identifying the proper classification for each portion can the overall classification level be 
· determined. 
a. 
(U) The three sample paragraphs shown here contain "Unclassified," "Secret," and "Confidential" information, respectively. Portion markings consist ofthe letters "(U)" for unclassified, "(C)" for "Confidential," "(S)" for "Secret," and "(TS)" for "Top Secret." 

b. 
(U) These abbreviations are placed, in parentheses, before the portion, or after the title to which they apply. 


c. (U) Whenever possible, use an unclassified title or subject line. If a classified 1.&2. title and/or subject is necessary, follow it with a short, unclassified title. 
~ 
2. 
(S) The second step in classifying a document is determining the overall classification ofthe document. The overall classification is determined by the highest classification level ofinformation contained in the document. In the example shown here, "Secret" is the highest level ofclassification. This is paragraph 2. Ifit were to contain "Secret" information, this portion would be marked with the designation "S" in parentheses. 

3. 
(C) "Conspicuously" place the overall classification at the top and the bottom ofthe page. This is paragraph 3. Ifit were to contain "Confidential" information, this portion would be marked with the designation "C" in parentheses. 


Classified by: Emmett Paige, Jr., ASD(C31) 
Reason: 1.5 (a) and (d) 
Declassify on: December 31, XXXX 

SECRET 
5 


Portion Markings and Overall Classification Marking 
SECRET--4 · 
4. 
(U) Mark each internal page with the overall classification, or with the highest classification level ofinformation contained on that page. 

5. 
(S) This is paragraph 5. Ifit were to contain "Secret" information, this portion would be marked with the designation "S" in parentheses. 



SECRET 
SECRET 
4. 
(U) This is paragraph 4. It is an unclassified paragraph and is therefore marked with a "U" as other portions on this page are classified. Should this paragraph be used to create another document, the information taken from this paragraph from this page would remain unclassified. 

5. 
(S) This is paragraph 5. Should this paragraph contain "Secret" information, this portion would be marked with the designation "S" as indicated at the beginning ofthis paragraph. The overall classification on this page is marked "Secret" because this paragraph contain Secret information, which is the highest 



SECRET 9 
UNCLASSIFIED 
4. 
(U) When using overall marking on every page ofa document, ensure that extracts ofthe document are remarked to reflect actual classification and source description. 

5. 
(U) This is paragraph 5. If it were to contain "Unclassified" information, this portion would be marked with the designation "U" in parentheses. 



UNCLASSIFIED 
SECRET 
(S) level ofclassification contained on the page. When a classified or unclassified paragraph is too long and must be carried over to another page, the classification MUST be carried forward as well. 
6. (U) This is paragraph 6. Ifit were to contain only "Unclassified" information, this portion would be marked with the designation "U" in parentheses. 

SECRET 
6 


Portion Markings and Overall Classification Marking 

SECRET 
Department of Defense 
Special Report 
ANX-128 (U) 

CLASS BY: REASON: DECLASS ON: 
1 September 1996 
SECRET SECRET 
Ifa document contains more than one page, the "overall classification marking" will be placed at the top and bottom of the front cover (if any), the title page (if any), the first page and on the outside of the back cover (if any). 
SECRET 
SECRET 
SECRET 
7 

"Classified by" and "Reason for Classification" Line 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

MEMORANDUM FOR DASD (I&S) 	31 August 1996 
SUBJECT: "Classified by" Line (U) 
1. 
(S) The third step in properly marking a document is to annotate the original classification authority on the document. This is accomplished by placing the original classification authority on the "Classified by" line. The "Classified by" line should include the name or personal identifier ofthe actual classifier and their position. Ifthe identification ofthe originating agency is not apparent on the face ofthe document, place it below the "Classified by" line. 

2. 
(U) Each original classification decision shall state a reason for classifying. Classification may be applied only to information described in the following categories as specified in section 1.5 ofExecutive Order 12958, "Classified National Security Information" are: 

a. 
(U) Military plans, weapons systems or operations. 

b. 
(U) Foreign government information. 

c. 	
(U) Intelligence activities (including special activities), intelligence sources or methods, or cryptology. 

d. 
(U) Foreign relations or foreign activities ofthe U.S., including confidential sources. 

e. 
(U) 	Scientific, technological, or economic matters relating to the national security. 

f. 
(U) U.S. Government programs for safeguarding nuclear materials or facilities. 

g. 	
(U) Vulnerabilities or capabilities ofsystems, installations, projects or plans relating to the national security. 



3. 
(U) The original classifier shall identify a concise reason for classification which, at a minimum cites the applicable classification categories in section 1.5 ofE.O. 12958 as the basis for classification. Original classifiers must ensure that the exemption category selected is consistent with the reason for classification cited on the document. 



~2.&3.
Classified by: Emmett Paige, Jr., ASD(C31)---
Reason: Military Plans; Foreign Relations 
OR ___3. 
Reason: 1.5 (a) and (d) 
Declassify on: December 31, XXXX SECRET 

8 

"Declassify on" Line 
The final essential marking indicates the duration of classification. This information is placed on the "Declassify on" line. When determining the duration of classification, choose one of the following three declassification instructions: (Whenever possible, select the declassification instruction that will result in the shortest duration of classification.) 
1. Date or Event When possible, identify the date or event for declassification which corresponds to the lapse of the information's national security sensitivity. The date or event shall not exceed 10 years from the date of the original classification 
OR 
2. Ten Year Duration 
When a specific date or event cannot be determined, 
identify the date that is 10 years from the date of the 
original classification 

OR 
3. Exemptions from the Ten Year Rule Ifthe information has been determined exempt from declassification at 10 years by the original classifier, place the letter "X" plus a brief recitation of the exemption category(ies) OR the letter "X" plus the corresponding number to that exemption category(ies) in section 1.6(d) of Executive Order 12958. 
See nextpage for a list ofthese exemption categories 
9 


Section 1.6(d) "Exemption Categories" 
Exemption from 10-year Declassification 

Xl. Reveal an intelligence source, method, or activity, or a cryptologic system or activity. X2. Reveal information that would assist in the development or use ofweapons ofmass destruction. 
X3. 	Reveal information that would impair the development or use oftechnology within a United States weapons system. 
X4. 	Reveal United States military plans or national security emergency preparedness plans. 
XS. 	Reveal foreign government information. 
X6. 	Damage relations between the United States and a foreign government, reveal a confidential source, or seriously undermine diplomatic activities that are reasonably expected to be ongoing for a period greater than 10 years. 
X7. 	Impair the ability ofresponsible United States Government officials to protect the President, the Vice President, and other individuals for whom protection services, in the interest ofnational security, are authorized. 
X8. 	Violate a statute, treaty or international agreement. 
10 


Working Papers 
Working papers are documents and material accumulated or created in the preparation offinished documents and material. Working papers containing classified information shall be: 
1. 	
Dated when created. 

2. 
Marked with the highest classification ofany information contained therein. 

3. 	
Protected in accordance with the assigned classification. 

4. 	
Accounted for, controlled, and marked in the manner prescribed for a finished document ofthe same classification when retained more than 180 days from date oforigin or released by the originator outside the activity. This requirement extends to all classification levels. 



Information Transmitted Electronically 
Information transmitted electronically, and retained as permanent records, must be marked, as would any other classified document, with the following special provisions: 
1. 	
The first item in the text must be the overall classification ofthe information. 

2. 
For information printed by an automated system, overall and page markings may be applied by the system, provided they stand out conspicuously from the text. In older systems, this may be achieved by surrounding the markings with asterisks or other symbols. 

3. 
Properly completed "Classified by" anf"Reason" lines or "Derived from" line, declassification instructions, and downgrading instructions (when appropriate) must be included in the last line. Declassification and downgrading instructions shall not be used for information containing Restricted Data or Formerly Restricted Data. 

4. 	
The following abbreviations may be used: 


"CLASS" for "Classified by" 
"RSN" for Reason (only necessary for originally classified information) 
"DECL" for "Declassify on" 
"DERV" for "Derived from" 
"DNG" for "Downgrade to" 

See example ofan electronically transmitted message on the nextpage. 
11 


SECURITY CLASSIFICATION
JOINT MESSAGE FORM 
SRC~RT 
Page DTG RELEASE TIME PRECEDENCE CLASS SPECAT LMF CIC ORIG MSG IDENT 
IDATE TIME MONTH YR ACT INFO 
' 01 of 01 I011730Z HJN 96 PP ssss BOOK MESSAGE HANDLING INSTRUCTIONS 
FROM: JCS WASHINGTON DCl I J31 I TO: SECDEF WASHINGTON DC SECRET SUBJ: PREPARATION OF DD FORM 173, "JOINT MESSAGE FORM" (U) REF DOD 5200.1-R 
1. 
(U) THE THREE LEVELS OF CLASSIFICATION ARE DOUE'LE SPACED WHEN TYPED ON THE CLASSIFICATION LINE. 

2. 
( S) PORI'ION MAFKING REQUIREMENTS FOR MESSAGES ARE THE SAME AS FOR OTHER DOCUMENTS. 

3. 
(C) THE "CLASSIFIED Ef" OR "DERIVED FIDM" LINE MUST ffi INCLUDED IN THE LAST LINE OF THE MESSAGE. 

4. 
(U) DECLASSIFICATION MAFKINGS ARE ABBREVIATED ON THE DD FORM 173 AS FOLLOWS -A SPECIFIC DATE FOR DECLASSIFICATION (I. E. AUGUST 31, 1996), IS SHOWN AS "DECL 31 AUG 96"; A SPECIFIC EVENT FOR DECLASSIFICATION, (I. E. THE COMPLETION OF AN OPERATION) IS SHOWN AS "DECL COMPLETION OF OPE RATION". 


DER\T sa; 123, DECL 31 AUG 96 
DISTR 
DRAFTER TYPED NAME TITLE OFFICE SYMBOL PHONE SPECIAL INSTRUCTIONS 
COL J.K. LAUER 
DH COMPTROLLER 57040 1 JUN 96 a:: TYPED NAME TITLE OFFICE SYMBOL AND PHONE ~ O_D. SEE RG. lJSA 
LS SIGNATURE SECURITY CLASSIFICATION DATE TIME GROUP 
_J 
~ SECRET 
12 



SECTION 2-Marking "Derivatively Classified" Documents 
SECRET 
ABC Battalion Report (U) 
Derivatively Classifying From a Source Document and Portion Markings (U) 
1. 
(S) Derivative classification is the act ofincorporating, paraphrasing, restating, or generating in new form, information that is already classified, and marking the newly developed material consistent with the markings ofthe source information. The source information ordinarily consists ofa classified document or documents, or a classification guide issued by an original classification authority. This paragraph contains incorporated information taken from the second paragraph of a source document, a paragraph marked "Secret." Therefore, this paragraph is marked with an "S." This, "derivative" document contains no other classified information. Therefore, portion mark all other portions with a "U." 

2. 
(U) When using a classified source document as the basis for derivative classification, the markings on the source document determine the markings to be applied to the derivative document. 


(a) 
(U) As with documents created by original classifiers, each derivative document must have portion markings and overall classification markings. 

(b) 
(U) The "Classified by" line is replaced with a "Derived from" line. The "Reason" line, as reflected in the source document(s) or classification guide, is not required to be transferred to the derivative document. Examples are on pages 14 and 15 ofthis guide. 


SECRET 
l September, 1996 

Special Report--ANX-128 (U) 
l. (U) This is paragraph l which contains "Unclassified" information. This portion will therefore be marked with the designation "U" in parentheses. . 
.,+-1. 
2. (S) This is paragraph 2 which contains -: 
"Secret" information. This portion will 
therefore be marked with the designation "S" in 
parentheses. 


SECRET 
Classified by: Emmett Paige, Jr. 
ASD(C3!) Reason: 1.5 (a) and (d) Declassify on: December 31, 2000 
SECRET 13 

Portion Markings and Overall Classification Marking of a Derivative Document 
SECRET 
0 
ABC Battalion 
Special Report (U) 
Derived from: DoD SCG #128 Declassify on: 31 December 2000 
1 November 1996 
SECRET 
··.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.· 
0 September I, 1996 
(Date of origin) Subject: DoD SCG #128 (U) 
d 
s"' 
:I 
u 
~ Classified by: Emmett Paige, Jr. "' ASD(C3l) 
l: Reason: 1.5(a) & (d)
:I . 
~ Declassify on: 31 December, 2000 
·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·. 
SECRET 
If a "derivative" document contains more than one page, the "overall classification marking" will be placed at the top and bottom of the front cover (if any), the title page (if any), the first page and on the outside of the back cover (if any). 
Qj 
Oll 
-~
SECRET ~ $.,. 
Qj Qj 
> 
~ 0 
•.-I 
u
SECRET ~ 
~ 
= 
0 
$.,.
SECRET ~ 
SECRET 
14 

"Derived from" and "Declassify on" Line 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

MEMORANDUM FOR DASD (I&S) 	26 June 1996 
SUBJECT: "Derived from" and "Declassify on" Line (U) 
1. 
(U) Identify the source used as the basis for classification on the "Derived from" line of the derivative document 

2. 
(S) The "Declassify on" line ofthe source document is carried forward to the "Declassify on" line ofthe derivative document. This is paragraph 2. Ifit were to contain "Secret" information, this portion would be marked with the designation "S" in parentheses. 

3. 
(U) When the "Declassify on" line ofthe source document is marked "Originating Agency's Determination Required" or "OADR", mark the "Declassify on" line ofthe derivative document to indicate: 

a. 
(S) The fact that the source document is marked "OADR." 

b. 
(U) The date oforigin ofthe source document. 



4. 
(U) This marking will permit future determination when classified information becomes 25 years old. lfthe information is determined to be ofpermanent historic value, provisions ofthe automatic declassification program (section 3.4 ofE.O. 12958) apply. 


·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.· 
Source Document 
June 25, 1994 (Date oforigin)
Derived from: 	ASD(C3I)Memorandum _
3
Subject: Classification
Subj: Classification Markings (U) ~ 
Markings (U) 
Declassify on: 	Source document marked "OADR" 
Date ofsource 6/25/94 

Classified by: ASD(C31) Declassify on: OADR* 
SECRET 
·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.·.· 
Note: "OADR" is not an approved markingfor documents originally classified under E.O. 12958. 
15 

Derivatively Classifying From Multiple Sources 
Portion Marking 
When using more than one classified source document in creating a derivative document, portion mark the classified information incorporated in the derivative document with the classification level indicated on the source documents. In the example shown, paragraph one ofthe derivative document incorporates "Secret" information from paragraph one ofSource 1 and paragraph two ofthe derivative document incorporates "Confidential" information from paragraph one ofSource 2. The remainder ofthe derivative document is "Unclassified". 
(S)---
(S) 
~  (C)  
~  
~-= 0 rJJ  (C)  ~ ~......  (U)  
~  
~... 

-
~ 
~ 
M 
~ ~
-= 

0 rJJ L...--------.....1 
Overall Classification Marking 
The derivative document will be conspicuously marked at the top and bottom with the highest classification level of information found in any portion ofthe document. The overall classification shown here is "Secret." Ifthe derivative document contains more than one page, each page will be marked with an overall marking. (Refer to page 6for review.) 
SECRET I SECRET 
(S)____,.....------a.---, (S) -CONFIDENTIAL 
(C) (C) 
~ (U) ~ ...

... ~ 
~ 
~ ... ~ 
-. M -~ 
= ~ 
0 ~ ~ 
~ SECRET
00._ 
= 

~ CONFIDENTIAL 
16 

"Derivedfrom" Line 
Enter "Multiple Sources" on the "Derived from" line ofthe derivative document to indicate that more than one classified source was used. 
(C) 
(S) 
(S) ____ 
M 
Ql 
~ 	(C)---
-
= Classified by: SECDEF= rJ'J Declassify on: OADR Ql (U)
;;.
...

Classified by: ASD(C3I) ...... 
Reason: l.S(d) = 
Declassify on: X6 ·c;;. Derived from: Multiple Sources 

~ Declassify on: ----------
~----------------~ 

Source document Marked "Multiple Sources" 
A source document that is itself marked "Multiple Sources" presents a special problem in identifying that document on the "Derived from" line ofthe new document. The "Multiple Sources" notation will not be carried forward to the new document as the actual sources of classification could not be traced. Instead, identify the source document by originator, date and subject on the "Derived from" line ofthe derivative document. 
SECRET 

OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

MEMORANDUM FOR DASD (I&S) July 25, 1995 
SUBJECT: Security Awareness of Classification 
Markings (U) 

1. 
(S) This is paragraph I which contains 
"Secret" information This portion will therefore be 
marked with the designation "S" in parentheses. 


2. 
(U) This is paragraph 2 which contains 
"Unclassified" information. This portion will 
therefore be marked with the designation "U" in 
parentheses. 



ASD(C3I) 
Classified by: Multiple Sources 
Declassify on: OADR 


SECRET Derivative Document used as a Source Document Prior to E.O. 12958, all documents carried a "Classified by:" line. 
17 

SECRET 

DEFENSE INVESTIGATIVE SERVICE 
(S) 
Derived from: ASD(C31) Memo; Subject: Security Awareness of Classified Markings (U) 
Declassify on: 	Source marked OADR 
dated July 25, 1995 


SECRET Derivative Document 


Identification ofall classified sources 
Maintain the identification ofall 
classified sources with the file or 
record copy ofthe derivative 
document. Ifpracticable, include the 
list with all copies ofthe derivative 
document. 

"Declassify on" Line 
Official File Copy 
Derived from: Multiple Sources 
Source 1: ASD(C31) Memo dtd Oct 15, 95; Subj: ---l Declassify on: X-6 
Source 2: 	SECDEF Memo dtd July 1, 94; Subj: _ Declassify on: OADR 
Prior to marking the Derivative document with the "Declassify on" Line, determine which source document requires the longest period ofclassification. Once that has been determined, the derivative document should reflect the longest period ofclassification as indicated here. 
(To review declassification instructions, classification duration and/or exemptions, see pages 9 and 10) 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
~ 
WASHINGTON, DC 
Oct. 15, 1995 
MEMORANDUM FOR DASD (I&S) 
SUBJECT: Security Awareness of Classification 
Markings (U) 

(S) This is paragraph contains "Secret" information This portion will therefore be marked with the designation "S" in parentheses. 
Classified by: Emmett Paige, Jr., ASD(C31) 
Reason: 1.5(a) 
Declassify on: X6 

SECRET Source 1 
Classified by: SECDEF Declassify on: OADR 
SECRET 
Source 2 
SECRET 
(S) 
Jul 1, 1994 
(S) 
Declassify on: X-6 
SECRET 
Derivative: Since both documents 
have indefinite dleclassification 
instructions, use the declassification 
instructions with the longest period 
of classification. 
18 

Derivatively Classifying from a Classification Guide 
A classification guide is a document issued by an original classification authority that provides derivative classification instructions. It describes the elements of information that must be protected, and the level and duration ofclassification 
Department ofDefense 
Security Classification 
Guide 

Subject Classification Instructions Level Reason Duration 
1. Program Planning  u  
2. Program Progress  u  
3. Technical Scope  c  
4. Vulnerability  s  x-3  
5. Limitations  u  

Portion Markings 
Paragraph 1 of this derivative document contains information that paragraph 3 of the classification guide specifies shall be classified "Confidential." Following the guidelines of the Classification Guide, the first paragraph has been marked with a "C." All other portions are unclassified, as indicated in the Classification Guide, and are marked appropriately with a "U." 
Overall Classification Marking 
Conspicuously mark the overall classification at the top and bottom of the derivative document. As shown here, the highest classification level is "Confidential." 
Department of Defense 
Security Classification 
Guide -128 (U) 

1 November 1995 
"\ 
CONFIDENTIAL Title (U) 
(C) 	
This paragraph includes information about technical scope. 

(U) 	
This paragraph includes information on program planning 

(U) 	
This paragraph includes information on program progress. 


~ 
.::; Derived from:: Scty Class Guide #128 
~ 
~ Dated: 11/l/95 .::; Declassify on: April15, 2005 
""' 
~ CONFIDENTIAL 
19 
SECTION 3-Marking Special Types of Information and Material 
Classification Extensions 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE WASHINGTON, DC 
MEMORANDUM FOR DASD (I&S) 	26 August 1996 
SUBJECT: Classification Extensions (U) 
1. 
(U) An original classification authority may extend the duration ofclassification for successive periods not to exceed ten years at a time. For information contained in records determined to be permanently valuable, multiple extensions shall not exceed 25 years from the date ofthe information's origin. 

2. 
(S) Revise the "Declassify on" line to include the new declassification instructions, and the identity ofthe person authorizing the extension and the date of the action. 

3. 
(U) Reasonable attempts should be made to notify all holders ofa classification extension. 


Classified by: 	Emmett Paige, Jr. 
ASD(C3I) 

Classification extended on
Reason: 	1.5 (a) and (d) Dec. 1, XXXX until Dec. 1, 2010Declassify on:Decemher 31, XXXX by William S. Cohen, SECDEF 
SECRET 

20 

Foreign Government Information 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE WASHINGTON, DC 
MEMORANDUM FOR DEPSECDEF 	27 March 1996 
SUBJECT: Foreign Government Information (U) 
1. 
(U) The U.S. Government affords protection to information provided by foreign governments. Care must be taken to identify the source ofthe information. 

2. 
(FGI-C) Mark the portions that contain the foreign government information to indicate the country oforigin and the classification level. Substitute the words "Foreign Government Information" or "FGI" where the identity ofthe specific government must be concealed. The identify ofthe concealed foreign source in this example must be maintained with the record copy and adequately protected. 

3. 
(UK-S) This paragraph contains information marked "Secret" by the government ofUnited Kingdom. The "Derived From" citation should cite the title ofthe document provided. Declassification date, event, or exemption category is carried forward, ifknown. 


Derived from: 	FGI Source Document or 
Identify Foreign Government 
Source Document dated 

Declassify on: 	xs, FGI 
When the identity of the country must be concealed, substitute 
"Foreign Government Information (FGI)" for the name of the 
specific country and note the country in the record copy of the 
document. 

SECRET 
Include the following statement at the bottom ofdocuments containing classified foreign government information: "This document contains (country oforigin) Information." Routine correspondence, such as this memorandum, does not require this statement. 
21 

Letters of Transmittal 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

MEMORANDUM FOR DASD (I&S) August 27, 1996 
SUBJECT: Letters ofTransmittal 
1. 
Information in transmittal letters are marked on the basis ofcontent. Frequently, unclassified transmittal letters have classified attachments. The overall marking on the transmittal letter must reflect the highest classification ofits attachments. 

2. 
Conspicuously mark an unclassified transmittal document with the higlltest classification level of any information transmitted by it. Also mark the transmittal document with an appropriate instruction indicating that it is unclassified when separated from classified enclosures, as shown here. 


Joseph Smith 
OASD(C3I) 

1 
Attachments:-----· 
1. 
Secret C3I memorandum, dated subj: __ 

2. 
Memo dated 


___2. Unclassified when separated from classified enclosures ___2. SECRET 
22 



Letters of Transmittal 
SECRET 
OFFICE OF THE SECRETARY OF DEFENSE 
WASHINGTON, DC 

MEMORANDUM FOR DEPSECDEF August 31, 1996 
SUBJECT: Letter ofTransmittal With Classified Information (U) 
1. (U) Ifthe transmittal document itself contains classified information, mark it as required for all other classified information, except: 
a. 
(U) Conspicuously mark the top and bottom ofthe transmittal document with the highest classification level ofany information contained in the transmittal document or its enclosures; 

b. 
(C) Mark the transmittal document with an appropriate instruction indicating its overall classification level when separated from its enclosures as shown in this example. 


2. 
(U) The derived from line reflects the decision applied to the transmittal letter. Page 23 ofthe Security Classification Guide-123 requires the paragraph above to be Confidential. 

3. 
(U) In this example, the Attachment is classified SECRET. Therefore, the overall classification ofthis particular transmittal letter is marked "SECRET". 


Emmett Paige, Jr. 
ASD(C3I) 
Attachment 
Secret memo dtd __subj __ 

__3. 
Derived from: SCG-123 
Declassify on: December 31, XXXX 

Downgrade to Confidential when separated from Secret enclosure --1. 
__3. SECRET 
23 



Atomic Energy Information 
SECRET Restricted Data OFFICE OF THE SECRETARY OF DEFENSE WASHINGTON, DC 
MEMORANDUM FOR DEPSECDEF August 31, 1996 
SUBJECT: Atomic Energy Act of 1954 (U) 
1. (S-RD) Documents containing "Restricted Data" or "Formerly Restricted Data" as defined by the Atomic Energy Act of 1954, should have abbreviated markings ("RD" or "FRD") included with the classification marking (S-RD). 
a. 
(S-FRD) This paragraph contains "Secret" Formerly Restricted Data only. RD markings will not be applied. 

b. 
(S-RD)(N) Critical Nuclear Weapon Design Information (CNWDI) shall be marked with an "N" in separate parentheses following the portion marking. 


3. (U) Special warning notices are applied to RD, FRD, and CNWDI. If a document combines both as depicted here, only the RD warning notice is affixed. No declassification instructions are used. 

Joseph Smith OASD(C3I) Attachment Derived from: DoE CG-W5 Warning notice (identify the classifier) R t . t d D t
es nc e a a SECRET 
Warning Notices: 
RESTRICTEDDATA. 
This document contains RESTRICTED DATA as defined in the Atomic Energy Act of 1954. Unauthorized disclosure subject to administrative and criminal sanctions. 
FORMERLY RESTRICTEDDATA. 
Unauthorized disclosure subject to administrative and criminal sanctions. Handle as RESTRICTED DATA in foreign dissemination; Section 144b, Atomic Energy Act of 1954. 
CNWDI 
Critical Nuclear Weapon Design Information-DoD Directive 5210.2 applies. 

E.O. 12958 does not apply to "Restricted Data" or "Formerly Restricted Data." This example shows how to integrate Restricted Data and Formerly Restricted Data into a DoD-generated document. The Department of Defense does not originate RD or FRD; therefore, all documents should reflect "derived from:" byline. In this example, we are citing a Joint DoD and DoE classification guide published by the Department of Energy. For additional guidance, see your security officer. 
24 



Classification by Compilation 
CONFIDENTIAL 
OFFICE OF THE SECRETARY OF DEFENSE WASHINGTON, DC 
MEMORANDUM FOR DASD (I&S) August 31, 1996 
SUBJECT: Classification By Compilation (U) 
1. 
(U) When a document consisting ofindividually unclassified items ofinformation is classified by compilation, the overall classification shall be marked conspicuously at the top and bottom ofeach page and the outside ofthe front and back covers (if any). An explanation ofthe basis for classification by compilation shall be placed on the face ofthe document or included in the text. 

2. 
(U) Ifportions, standing alone, are unclassified, but the document is classified by compilation or association, mark the portions "U" and the document and pages with the classification ofthe compilation. You must also add an explanation ofthe classification or the circumstances involved with association. 

3. 
(U) Ifindividual portions are classified at one level, but the compilation is a higher classification, mark each portion with its own classification, and mark the document and pages with the classification ofthe compilation. An explanation ofthe classification by compilation is required. 


Emmett Paige, Jr. ASD(C3I) Attachment 
2. Derived from: CONOP #123. The compilation of unclassified ~ training schedules reveals the impending initial operational capability (IOC) of this us it. CONOP #123 requires that unit IOC be classified 
CONFIDENTIAL. Declassify on: Completion of Operation 
OR  
Classified by:  ASD(C3I)  2  
Reason:  Compilation of unclassified Training schedules fo~  ·  
specific contingency plan is CONFIDENTIAL  
Sect. 1.5( a).  
Declassify on:  August 31, 2001  CONFIDENTIAL  

25 


Special Access Programs 
1. 
"Special Access Programs" (SAPs) are established lAW Chapter 8, DoD 5200.1-R, "Information Security Program Regulation." SAPs are created only when absolutely necessary to protect the Nation's most sensitive and critical information or when required by statues. Establishment shall be consistent with law, policy, and regulations, and be based on a determination that the threat and/or vulnerability (e.g. sensitivity or value ofthe information) warrants enhanced protection. 

2. 
Any DoD program or activity employing enhanced security measures exceeding those normally required for information at the same classification level shall be established, approved, and managed as a DoD SAP. Examples ofsuch enhanced security measures include the following: 

a. 
use ofany special terminology, including code words, other than an unclassified nickname, to identify or control information dissemination; 

b. 
personnel security investigative or adjudicative requirements more stringent than those required for a comparable level ofclassified information; 

c. 
specialized non-disclosure agreements; 

d. 
exclusion ofa classified contract (use ofcarve-out); or 

e. 
a central billet system to control the number ofpersonnel authorized access. 



3. 
All DoD programs which operate under the above enhanced procedures are considered to be SAPs, including (i) Programs managed under special delegation authorities previously approved by the Secretary ofDefense or Deputy Secretary ofDefense; (ii) Programs sponsored by other departments or agencies, but for which DoD participants manage internal DoD security controls 


(e.g. DoD-managed subcompartments oflarger, non-DoD SAPs; (iii) and Programs conducted in support of, or in cooperation with, other departments, agencies, branches ofgovernment, or other governments. SAPs may only be approved by the Secretary ofDefense or Deputy Secretary of Defense. 
4. All marking provisions previously described in this guide apply to SAPs. Additional markings include: (i) the use of special distribution notices such as "Special Access Required" (SAR); and/or 
(ii) an assigned program nickname(s) or code word(s) 
5. To differentiate a nickname from a code word, remember that: 
a. 
A nickname is a combination oftwo unassociated and unclassified words. 

b. 
Nicknames are normally typed in ALL CAPS. 

c. 
A code word is a single word assigned a classified meaning by appropriate authority. 

d. 
The code word is classified Confidential or higher. 

e. 
All nicknames and code words are issued through the DoD Components (usually SAP channels) and strictly controlled. 


6. The unclassified examples on the following two pages, depict common markings for SAP documents. The examples are for ILLUSTRATIVE USE ONLY. The format for markings should be adjusted to accommodate software applications and production efficiency. For instance, the examples show the overall classification and nickname/code word in the header and the overall classification and special access requirement in the footer. 
26 


SAP "NICKNAMES" 
SAPs use nicknames for control ofdissemination and "need-to-know." Nicknames are assigned to the program when the SAP is approved. Nicknames are designated by two unassociated words, which are unclassified by themselves (i.e. TWISTED FEATHER). 
TOP SECRET/TWISTED FEATHER (U) 
OFFICE OF THE UNDER SECRETARY OF DEFENSE FOR POLICY 
June 25, 1996 
Paragraph markings in 
MEMORANDUM FOR SPECIAL ACCESS PROGRAM CENTRAL OFFICES 
SAP documents should contain the highest 
SUBJECT: Identification and Marking of Classified Documents (U) classification within the paragraph, and be 1. (U) This paragraph contains "Unclassified" information. followed by the SAP 
2. (C) This paragraph contains non-SAP national security information. 
digraph. 1 ~ 
3. (TS/TF) This paragraph contains TOP SECRET information related to the special access program TWISTED FEATHER (U). Portion markings are the same as previously described in this marking guide. The exception is the addition of the nickname digraph following the TS designation. 
Richard F. Williams, CPP Director, Special Programs ODUSD(P)Policy Support 
Classified by: USD(P) 
Reason: 1.5 (a) and (d) 
Declassify on: December 31, 2000 

Highest classification 
and program nickname 
are conspicuously 
placed at the top 
and bottom. 

2 
TOP SECRET/SPECIAL ACCESS REQUIRED 
A SAP digraph or trigraph is a 2 or 3 letter designator given to each SAP. In this example, "TF" 
shown here represents the nickname "TWISTED FEATHER". 

A nickname, code word, trigraph, and/or digraph may be substituted for the term "SPECIAL 
ACCESS" Channels. Refer to the SAP Security Procedure Guide for instructions. 

27 


SAP Documents 

SAP ''CODE WORD" 
In addition to nicknames, SAPs also use code words for control ofdissemination and a "need-to-know". Code words, like nicknames, are assigned to the program when the SAP is approved. A code word is a single word with a classified meaning. 
Paragraph markings in SAP documents should contain the highest classification within the paragraph, and be followed by the SAP 
digraph ~ 
Highest classification and program code word are conspicuously placed at the top and bottom 

TOP SECRET/CODE WORD (S) 
OFFICE OF THE UNDER SECRETARY OF DEFENSE FOR POLICY 
MEMORANDUM FOR SPECIAL ACCESS PROGRAM CENTRAL OFFICES 
SUBJECT: Identification and Marking of Classified Documents (U) 
1. 
(U) This is paragraph 1, which contains "Unclassified" information. 

2. 
(TS/CW) This paragraph reflects Top Secret information controlled in the CODE WORD classified program. 


Richard F. Williams, CPP Director, Special Programs ODUSD(P)Policy Support 
Derived from: CODE WORD SCG, dtd Declassify on: December 31, 2000 

TOP SECRET/SPECIAL ACCESS REQUIRED 
28 





Section 4 -"Other" 

Automatic Declassification -The 25-year rule 
1. 
The automatic declassification provision (Section 3.4) ofE.O. 12958, requires declassification of information in permanently valuable historical records (as defined by Title 44, U.S. Code) 25 years from the date oforiginal classification, whether or not the records have been reviewed. Subsequently, all classified information in such records shall be automatically declassified no later than 25 years from the date ofits original classification, with the certain exceptions outlined in the E.O. 

2. 
Only the Secretary ofDefense and the Secretaries ofthe Military Departments may exempt information from this automatic declassification, and only under certain circumstances. Information exempted from automatic declassification at 25 years remains subject to the mandatory and systematic declassification review provisions. 

3. 
Ifthe record is exempt from 25 year declassification, the following markings are used: 


a. Site the exemption categories for number or phrase on the "Declass" line 
Example: 25X __ 
25X, Human Sources 

b. List a date for "Declass" review 

Example: 25X __ 
Review 4/15/10 

4. 
Classified information, contained in records that are more than 25 years old, and which have been determined not to have permanent historical value, and are scheduled for disposition in agreement with the National Archives and Records Administration (NARA), is not subject to automatic declassification. Agency retention and destruction requirements apply. 

5. 
Consult your security officer or records manager for additional information. 


29 




Marking Information "Other Than" Documents 
Charts, maps, equipment, drawings and photographs 
Information must be marked with the highest level of classification regardless of what form that information may take. The next few pages show examples of marking situations to guide you. The principles are the same. Portion marking, overall marking, classification byline and declassification instruction. The legend, title and scale blocks in the following examples are treated as portions of the document. Ensure that the overall classification of the product shows when the item is folded or rolled. 
SECRET SECRET 
Full Scale (U) 
SECRET 
or 
50 SECRET 
40 
30 
20 
SECRET 
10 
10  20  30  40  (U)  Maps may have the portion marking inside or outside the map area. Mark to eliminate  
doubt as to what the classification of the  
Figure 2:  (S) Charts may have the portion marking  portion may be.  
inside or outside the chart area. Mark to eliminate  
doubt as to what the classification of the portion  
may be.  
SECRET  SECRET  

If these pages are part of a classified document, mark as indicated above. When charts and maps are single page documents, include the required associated markings (i.e. Title, Origination Date, "Classified by" line, "Declassify on" line, Name and address of Originating Agency, Overall Classification, and Portion Markings). 
30 


Hardware and Equipment 

Hardware, software, computers, and equipment must have the required markings applied. 
SECRET-PROGRAM NICKNAME 
Standard Form labels are 
also available-see page 33. 

(Hardware or Equipment Tag) 
SECRET-PROGRAM NICKNAME 

Title: Derived From: 
Date Ori inated: Declassify on: 
Name and Address of Document Control Number: Originating Agency: (if required) 
SECRET-PROGRAM NICKNAME 

31 


Continuous Form (Fan Folded or Rolled) Documents 
Continuous form/fanfold documents are unique documents requiring specialized marking. 
The required 
1. Apply the overall classification at the top 
markings must and bottom of the first and back pages. 
appear on the title or 2. Apply the required markings on the face front page 
page (either the first page or front cover). 
3. 	
Apply markings by either computer software. stamps. or other methods. 


4. 	
For production efficiency, the overall classification of interior pages may be the overall document classification. 

5. 	
Portion markings of individual lines is not required. 

6. 	
If separated. title pages must be applied to each document created as a result of breaking continuous form. 


Safeguard Statement: 

(This optional statement is often applied to these products on the first page) 
"HANDLE AS (enter the appropriate classification level) INFORMATION UNTIL REVIEWED BY THE ORIGINATOR OR CLASSIFICATION MANAGER." 
Note: The requester of the product determines the actual classification after receipt and may change the classification after review and before storing or taking other accountability actions. 
Transparencies, Vu-Graphs, and Slides 
SECRET 

Name and Address 
Title:----------
Date of Orig: of Facility of Origin: --------

SECRET 
Overall classification, special control notices, and other required security markings must be shown on the image area and also on the border, frame or holder. 



SECRET 
Derived from:------
SECRET

Declassify on: ------
32 




Computer Media 
Basic document markings apply to all media. 
Computer disc must reflect the highest level of classification contained on the disc. Standard labels should be used for all levels of classification. 
SF706 -Top Secret SF707 -Secret SF708 -Confidential SF709 -Classified SF710-Unclassified SF711 -Data Descriptor SF712 -Classified SCI 
No standard form (SF) and/or label(s) exist for Compact Discs (CDs). The SF labels prescribed for removable storage media may be used for the marking of classified CDs and their cases. Classification must be conspicuously marked on the CD case and the CD itself. 
Slides must have markings on the slide cover and on the actual image so when the slide is displayed on screen, the classification is clearly identified. Applicable associated markings should be applied to the lead slide. 
33 



References 

1. 	Executive Order 12958, "Classified National Security Information," April17, 1995 
2. 	Office ofManagement and Budget Implementing Directive to E.O. 12958, October 13, 1995 
3. 	DoD Directive 5200.1, "DoD Information Security Program," December 13, 1996 
4. 	DoD 5200.1-R, "Information Security Program Regulation," January 17, 1997 
5. 	DoD Directive 0-5205.7, "Special Access Program (SAP) Policy," January 4, 1989 
6. 	Director ofCentral Intelligence Directive 1/7, "Security Controls on the Dissemination oflntelligence Information," April 16, 1996 
7. 	Director ofCentral Intelligence Directive 5/6, "Intelligence Disclosure Policy," draft. 
8. 	DoD Directive 5210.2, "Access to and Dissemination ofRestricted Data," January 12, 1978 
This guide does not include instructions for the marking of sensitive and/or controlled, unclassified information. Refer to DoD 5200.1-R (Appendix C) for additional information. 
34 


Notes: 
Security Manager: _______________________ _ 
Telephone: _________________________ _ 

35