Trivia: After Erika tells Hawkeye that the ring is her grandmother's and she's not married, when Hawkeye joins Erika on her cot the lights flicker on and off a few times. This flickering was real and totally unscripted, and was due to a power failure on the set, but because Alan Alda and Joan Van Ark didn't miss a beat and continued with their lines the scene wasn't reshot, and they just added the PA voiceover announcing that it's the generator again.
As You Were - S2-E20
Trivia: When Radar was on the phone saying he was an officer, he answered "Uh, well, I'm, uh, nineteen." I know it was for the show, but when this episode aired in 1974, Gary Burghoff was 31 years old at the time.
Hot Lips and Empty Arms - S2-E14
Trivia: In the O.R, a stand with a bottle of blood is knocked down and breaks, losing the blood. This quick shot of the event is reused from S2: E3 "Radar's Report".
Hot Lips and Empty Arms - S2-E14
Trivia: In the O.R., as Hot Lips is on a rant, a shot of a bottle of blood is smashing on the floor. This is a re-used shot from Season 2, Episode 3, "Radar's Report"
Deal Me Out - S2-E13
Trivia: Assuming he was home when the Conscription Officers came for him, Klinger would have travelled 561.3 miles from his home in Toledo, Ohio, to Grand Central Station in New York, NY.
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