Only 324 awards of the 3rd Award Combat Infantrymans Badge have been made. Plumley was one of these men. We used to call it the "Perfect Attendence" award for Infantry. Apparently though he only made 1 combat parachute jump in Korea, the other 4 mentioned in the movie being the writers. he was a Glider rider in WWII. At Sicily, Salerno, Normandy, Holland, fought at St. Vith in the Ardennes. In October 1950 jumped with the 187 RCT at Sukchon Sunchon.
Not that I've ever Parachuted or landed in a Glider, but they are making a bit much of the fact he never did 4 junps in WW2, he did however do 4 glider landings, tbh sounds worse.
Did soumd a decent bloke mind.