Other mistake: When the Colonel Griswald of the 1st Cavalry goes to leave camp, the Jeep he gets in is marked "4077 MASH" on the bumper instead of 1st Cav.
Other mistake: As Burns, driving the tank, runs over the Swamp, there's no sign of the still anywhere.
Visible crew/equipment: After Charles confronts Choi Sung Ho about the candy, Ho explains that he sold it on the black market to buy real food, and when Ho reenters the mess tent through the side door, we can see that outside there's a director's chair, which actors also use, with something printed on its back.
Sometimes You Hear the Bullet - S1-E17
Henry Blake: All I know is what they taught me at command school. There are certain rules about a war, and rule number one is that young men die. And rule number two is that doctors can't change rule number one.
Trivia: There were no American planes shot down over the Sea of Japan during the Korean conflict. It is rumoured that producer/director Larry Gelbart knew that, but wrote Henry Blake's death scene as he was very unhappy with the way Mclean Stevenson had left the show, and was determined to make it clear that there was no way he would be coming back.
Question: A number of times it is mentioned that the outfit is unarmed, yet several times, Frank has a rifle, or a pistol, and once Klinger had a grenade, and the guards and Klinger, while on sentry duty, has a rifle. Was this standard, or is this a mistake?
Answer: The Geneva Convention allows even doctors to carry a sidearm to be used in their self defense or the defense of their patients, however it is rare to do so.
Answer: As an old medical unit staffer, my experience is that med units have combat units assigned to defend them. Usually it was marines.
Answer: My old doctor (now deceased) served in Korea during the War. He was required to carry a sidearm anytime he was not in the hospital.
Answer: Even an Army field hospital would have SOME weapons for self-defense if the enemy attacked. What's meant is that it's not a combat outfit, and therefore wouldn't have enough weapons to actually attack anyone. (It's also mentioned a few times that the Officer of the Watch is supposed to carry a pistol at all times, but Hawkeye refuses to do it when he's in charge and Colonels Blake and Potter don't enforce the rule).
Captain Defenestrator