On Oct. 1, 1961, with only 25 personnel and borrowed space in the Pentagon, the Defense Intelligence Agency was born. The Agency would go on to manage and direct an increasing array of missions and functions that provide intelligence support to the national command authority and the warfighter. The Department of Defense issued DoD Directive 5105.21 (referred to as DIA’s charter) in August 1961, which directed the establishment of the DIA. The creation of the Agency was the result of recommendations contained in a 1960 report prepared by the Joint Study Group on Foreign Intelligence Activities of the United States Government, and from Secretary of Defense Robert McNamara’s own desire to achieve unity of effort in the production of military intelligence through a more effective management of DoD intelligence resources.