The poster might equally mean a man putting off his uniform in readiness to put on his civvies.
There is that poster of a man putting on his uniform while his civvies are shown in the background upon a chair.
Is he aware that they are not interested in trews or the kilt but in getting back into civvies?
I know of a police force where children are questioned by expert people not in uniform but in "civvies"; and they are able to "bring forth" from the child.
These days, service men and women are more likely to go to work in civvies and, if they wear uniforms, they will be under a mac.
