Follies of the Living - Concerns of the Dead - S10-E10
Visible crew/equipment: When Klinger wakes up in post-op, Margaret, Hawkeye, and BJ are happy he's awake, and in Klinger's first close-up when he asks about Weston the shadow of the boom mic can be seen at the top left corner of the screen, and in his second close-up a bit of that shadow is still noticeable as it moves out of shot.
Follies of the Living - Concerns of the Dead - S10-E10
Continuity mistake: In the Swamp, after another drink, Charles puts a clamp on BJ's hand. As he does, the points are facing Hawkeye. In the wide shot, they're pointing at BJ. Then after Charles passes out, they're pointed at Hawkeye again.
Follies of the Living - Concerns of the Dead - S10-E10
Continuity mistake: When BJ, Charles, and Hawkeye are in the Swamp getting drunk they toast to "war, the fountain of loveliness," and Charles attaches the surgical clamp to BJ's hand and it dangles with the end facing out in the closeup, but the clamp faces the opposite way in the wideshot, then it's changed again.
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