Saluting
When you are on the receiving end of a salute, you need not worry. After all, the gesture is only one way of saying hello. It can be a little hard to stop doing it after going back to civilian life, but it is basically harmless. Why don’t you salute back in return?
No Kitchen
You have every right in the world to feel offended when someone refers to your kitchen as ‘the mess’. However, the only exception to the rule might be your friends from the military. It’s nothing personal, it’s just military speak for the kitchen.