General of the Army (GA) is a five-star general officer and the highest possible rank in the United States Army. A General of the Army ranks immediately above a general and is equivalent to a fleet admiral and a General of the Air Force. There is no established equivalent five-star rank in the other federal uniformed services (Marine Corps, Coast Guard, United States Public Health Service Commissioned Corps, and National Oceanic and Atmospheric Administration Commissioned Corps). Often called a "five-star general", the rank of General of the Army has historically been reserved for wartime use and is not currently active in the U.S. military.