"Military History Operations," (ATP 1-20 / FM 1-20) is applicable to all Army military history offices, military history units, and military history operations of major tactical and support commands generally at corps level and below. FM 1-20 provides basic doctrine describing the roles, relationships, organizations, and responsibilities of Army component command historians, historians, unit historical officers, and military history detachment (MHD) members in the United States Army. It describes, but does not extensively cover, historians and historical offices of units at echelons above corps and at the joint level. It is designed to provide historians, unit historical officers, commanders, and staffs the methods to preserve and document the history of the U.S. Army. It explains how the Army conducts military history operations during wartime, for both deployed forces in the combat theater and those units supporting the operation. The Army has responded to numerous contingencies or military operations other than war in recent years, and this FM provides doctrine on conducting military history operations during such contingencies. It also provides commanders doctrinal guidance on the employment of organic military history assets as well as separate military history units.

This regulation encompasses garrison, field, and subsistence supply operations. Specifically, this regulation comprises Army Staff and major Army command responsibilities and includes responsibilities for the Installation Management Command and subordinate regions. It also establishes policy for the adoption of an à la carte dining facility and for watercraft to provide subsistence when underway or in dock. Additionally, the regulation identifies DOD 7000.14–R as the source of meal rates for reimbursement purposes; delegates the approval authority for catered meals and host nation meals from Headquarters, Department of the Army to the Army commands; and authorizes the use of the Government purchase card for subsistence purchases when in the best interest of the Government. This regulation allows prime vendors as the source of garrison supply and pricing and provides garrison menu standards in accordance with The Surgeon General's nutrition standards for feeding military personnel. Also, included is guidance for the implementation of the U.S. Department of Agriculture Food Recovery Program.

The 1992 edition of the FM 34-52 Intelligence Interrogation Field Manual.