I confess that I don’t know the answer to that. If a person is awarded a good conduct medal or any other medal in the Navy or Marine Corps, and enter the Army or the Air Force, those medals may be worn. I would think that would also apply to CIB, parachutist badge, etc.
Well, it goes without saying that Laughing Boy here(this goofy-looking kid) is WAY TOO tricked out with all that chest dressing he’s sporting. As I said, I regret never having served but as I said, I became well aware through the honor of knowing quite a number of WW2 veterans who came by The Combat Infantry Badge all the way from Normandy Beach, St.Lo, The Bulge and then some and it really frosts my nuts to see some jackass, I don’t care if he/she served, to pin that citation on themselves like they earned it. It’s a damned insult and it should be against the law!