The United States Army Medical Research Acquisition Activity (USAMRAA) was established 1 July 1984 under the jurisdiction of the Commanding General, United States Army Medical Research and Development Command (USAMRDC) pursuant to General Orders No. 13-1, Headquarters, Department of the Army, dated 8 June 1984. The organization was redesignated from “Agency” to “Activity” by Permanent Orders 26-2, dated 2 October 1984, Office of the Surgeon General, effective 1 October 1984. The procurement and contracting functions of the USAMRDC, the US Army Medical Materiel Agency, and the Walter Reed Army Institute of Research were consolidated in 1977 to form a single contracting group within Headquarters (HQ), USAMRDC. The Commander, USAMRDC, was designated as the Head of the Contracting Activity (HCA), and, in 1984, USAMRAA was established as a separate subordinate command element with a direct line of contracting authority from the HCA through the Commander, USAMRAA, to the Contracting Officers in accordance with Department of Army policy. Legal support for the contracting function was provided by the Command Judge Advocate's Office within USAMRDC. In 1993, USAMRAA, converted to civilian leadership with the establishment of a civilian Director. In 1994, the USAMRDC was renamed the US Army Medical Research and Materiel Command (USAMRMC). The HCA designation remained at the USAMRMC level. In October 1994, the responsibilities of the Principal Assistant Responsible for Contracting (PARC) were assigned as a collateral duty to the Director, USAMRAA. The PARC is on the USAMRMC Commanding General’s Special Staff. In 2015, the assignment of HCA moved from USAMRMC to MEDCOM.