I remember a couple of years ago there was a “blue-to-green” program where they basically wanted excess Navy & Air Force personnel to move over to the army; they probably didn’t get many takers, because the fact is they really needed people just to drive those vehicles that were getting attacked with IEDs. Servicemen probably figured that whatever they had been when they wore blue, they’d all be driving vehicles when they wore green.
Actually they got a lot of takers. Navy had really strict promotion and HYT guidelines, the Army offered a second chance.