In the United States Navy, the United States Coast Guard, the United States Public Health Service Commissioned Corps and the National Oceanic and Atmospheric Administration Commissioned Corps, rear admiral (lower half) (RDML) is a one-star flag officer, with the pay grade of O-7. Rear Admiral (lower half) ranks above
Captain and below
Rear Admiral (upper half). Rear Admiral (lower half) is equivalent to a brigadier general in the other uniformed services.
