I have a question that relates to something I am writing. In the US at least one sometimes hears of "bring back" or souvenir weapons which ex-servicemen brought back home after leaving the service. Sometimes these were enemy trophies (Lugers, etc.), sometimes they were service weapons that troops decided to keep. ("Sonny, this is my old M1/.45/carbine that saved my ass during the Big One.") The US Army had regulations against this, and one hears of men stuffing things in their barracks bags and so on. Does anyone have any idea how common this really was, or how difficult/easy it was to evade regulations? I am particularly interested in service weapons, less so in enemy trophies. I am most interested in American examples, but I also wonder about the British and Commonwealth.