When Potter is talking to Klinger he points at him then puts his arm down but in the next scene he is pointing straight up.
Velcro blood pressure cuffs were not in use during the Korean War. Velcro did not even receive a patent until after the Korean War in 1955.
When talking to Father Mulcahy in the mess tent, Colonel Potter says, "you wouldn't kid a Presbyterian". But, back when Colonel Potter first assumed command at MASH, he asked Father Mulcahy if he could do a Methodist service.