If it is not dictated by a higher headquarters, then I would say it is up to the Brigade Commander. The Rear Detachment Commander would have to be authorized with sufficient UCMJ authority. Maybe a Lt. Col or Major. If the Brigade Commander was also the local Garrison/Base Commander, then that may complicate the matter, unless the Brigade Commander has a standing Deputy Commander for Base Operations.
We need the fire brigade when something is on fire or if someone needs help
Cleveland Fire Brigade's population is 550,000.
London Fire Brigade's population is 7,753,600.
Jamaica Fire Brigade was created in 1871.
Dublin Fire Brigade was created in 1862.
The population of Dublin Fire Brigade is 1,000,000.
The Fire Brigade was created on 1926-12-20.
London Fire Brigade was created in 1904.
The duration of Mickey's Fire Brigade is 480.0 seconds.
Edinburgh was the first city in the world to have its own fire brigade.
Peterborough Volunteer Fire Brigade was created in 1884.