The Army Medical Department of the U.S. Army (AMEDD), formerly known as the Army Medical Service (AMS), encompasses the Army's six medical Special Branches. It was established as the "Army Hospital" in July 1775 to coordinate the medical care required by the Continental Army during the Revolutionary War. The AMEDD is led by the Surgeon General of the U.S. Army, a lieutenant general.

The Surgeon General of the United States Army is the senior-most officer of the U.S. Army Medical Department (AMEDD). By policy, the Surgeon General (TSG) serves as Commanding General, U.S. Army Medical Command (MEDCOM) as well as head of the AMEDD. The surgeon general's office and staff are known as the Office of the Surgeon General (OTSG) and are located in Falls Church, Virginia.