A military history detachment (MHD) is a unit in the United States Army responsible for collecting documentation of the army in military conflicts for future work by military historians in writing both official and unofficial histories of the Army. United States Army Center of Military History organizes these accounts.[1] MHDs are authorized and given their mission statements by the Army Tables of Organization and Equipment (TOE). In their efforts to document wars, MHDs collect oral histories and operational documents to enable historians to write the official histories of U.S. military activities.[1]