Cementing Relationships - S9-E3
Trivia: When someone is needed inside, B.J. tells Hawkeye to go, and says "I'll stay here with Der Bingle", referring to Mulcahy, due to him singing as he mixed cement. "Der Bingle" was a reference to Bing Crosby.
Father's Day - S9-E4
Trivia: Andrew Duggan plays Loretta Swit's father in this episode. In real life, Duggan was only fourteen years older than Swit.
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