Visible crew/equipment: At the end, after Father Mulcahy says goodbye to Sarah, when it cuts to a wideshot we can see two actors' rubber T-marks on the ground. The first is behind Father Mulcahy's feet, a white T-mark (albeit dirty) where Sarah had been standing, and the second becomes visible when Klinger runs over and bumps into Kellye, he kicks up some dirt which causes the black rubber T-mark to flip up off the ground.
Visible crew/equipment: When Marina arrives in the chopper with the wounded, the array lighting rig is reflected on the chopper's windshield.
Visible crew/equipment: When a very tired Hawkeye's in post-op checking on Marina in the morning, the shadow of the boom mic can be seen on the window curtain at the top, right corner of the screen.
Visible crew/equipment: After the troupe's performance in post-op, when it cuts to Brandy in Margaret's tent we can see the boom mic dipping into view at the top, right corner of the screen.
Continuity mistake: When the red head woman is playing the piano, it's a double. In the close up her hair is back and you can see her face. In the wide shots her hair covers her face so as to conceal the switch.
Factual error: When Winchester is shown in the Post Op, his oak leaf and medical symbols are on the wrong lapels.
Continuity mistake: As Potter pours the drinks for himself and Brandy, the glasses have enough for a sip. In the close up, they're a quarter to half full.
Continuity mistake: In Potter's tent, he holds the door for Brandy to enter. In the close up, you see him drop his left hand to close the door after she passes him and inside. After the angle change, his hand is back on the door, and she's just even with him walking forward.
Visible crew/equipment: When the nurse tells BJ that they're having a problem with Rice using his sales pitch in post-op, just as the nurse and BJ start walking over to Rice we can see the curved chalk foot mark on the floor.
Visible crew/equipment: After Colonel Potter gets off the phone, he tells Klinger about Torgy Porgy and how after four years of medical school Torgy washed out, and just as Potter and Klinger stand up lighting equipment can be seen at the top right side of the screen.
Visible crew/equipment: While Major Burnham watches everyone at work in the OR, just as Charles says, "If you'd care to step over here, Major," the boom mic dips into view at the top left side of the screen.
Visible crew/equipment: In the scene following BJ's shower, when Hawkeye and BJ enter their tent, you can see the tip of the boom mic drop for a couple seconds.
Give 'Em Hell, Hawkeye - S10-E4
Continuity mistake: After announcing that the visiting Colonel likes the project, Potter's left arm is at his side. A second later in the close up, it's behind his back.
Revealing mistake: Potter is taking the driving part of the test, with Rizzo riding along. In the long shot, as well as looking at Klinger stumbling along, you can see the Jeep occupants are stunt doubles.
Continuity mistake: In the Swamp, as Hawkeye asks about Peg's cookies, BJ folds the cards in his hand, and places his left hand over the top. In the close up, as he answers, he suddenly has the cards back in a fan.
Continuity mistake: As Rizzo turns to Potter to give the test score, he puts his cigar in his mouth, and his right hand on his papers. The next shot the cigar is suddenly in his right hand.
Communication Breakdown - S10-E6
Visible crew/equipment: While Colonel Potter and Margaret are with Charles, a nurse sees them and announces the presence of a newspaper, then when everyone gathers around Charles while he sets the reading rules, there's a man with blondish shoulder length hair and a beard, wearing a blue button down shirt and white pants who's standing in the background, partially hidden by the signpost.
Communication Breakdown - S10-E6
Continuity mistake: When Charles leaves the shower with newspaper covering his privates, the newspaper at his backside is wrinkled and messed up when he enters the Swamp in the exterior shot, but next shot the papers are different and arranged neatly.
Visible crew/equipment: When Klinger's at Little Chicago he asks one of the black market vendors about cameras and he points to another vendor, and when it cuts to the next shot we can see the actor's T-mark on the ground where the man walks away (his foot even moves the T-mark) and Klinger is about to stand.
Continuity mistake: When Klinger's stopped by the MPs it cuts to a close-up of the Polaroid camera and it's lying between the seats with its hand strap facing the front of the jeep, but when Klinger picks it up the camera's positioned the opposite way with its hand strap facing the back of the jeep.
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