Real Admirals Lower Half (United States)

Rear admiral (lower half) (abbreviated as RDML), is a one-star flag officer, with the pay grade of O-7 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 Officer Corps.

Rear admiral (lower half) ranks above captain and below rear admiral. Rear admiral (lower half) is equivalent to the rank of brigadier general in the United States Army, Air Force, Marine Corps, and Space Force and equivalent to the rank of commodore in most other navies. In the United States uniformed services, rear admiral (lower half) replaced the rank of commodore in 1985.

https://en.wikipedia.org/wiki/Rear_admiral_(United_States)#Rear_admiral_(lower_half)