Follow
Rear admiral (abbreviated as RADM), also sometimes referred to informally as "rear admiral (upper half)", is a two-star flag officer, with the pay grade of O-8 in the United States Navy, the United States Coast Guard, the United States Public Health Service Commissioned Corps, the National Oceanic and Atmospheric Administration Commissioned Officer Corps and the United States Maritime Service.
Rear admiral ranks above rear admiral (lower half) and below vice admiral. Rear admiral is equivalent to the rank of major general in the U.S. Army, Air Force, Marine Corps, and Space Force. It is the highest permanent rank during peacetime in the uniformed services. All higher ranks are temporary ranks and linked to their specific commands or office and expire with the expiration of their term of command or office.