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FOREWORD

This Pamphlet is reissued under the authority of DoD Directive 5200.1, "Information Security Program," December 13, 1996. It prescribes guidance through examples, on the markings for classified national security information. It supersedes the 1982, 5200.1-PH guide.

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 of the Secretary of Defense (SD), the Military Departments, the Chairman of the joint Chiefs of Staff, 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 of Defense. It alerts holders to the presence of classified 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 of any 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 of the 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 of the DoD Components may issue supplementary instructions when necessary to provide for unique requirements within their organizations.