It is alluded that "SGT" Kimble is the motor pool sergeant, but while in uniform he's wearing the "3 up-3 down" rank with a diamond. This is the rank of a First Sergeant (1SG) which would imply he's got more responsibility than just vehicles.
B.J.: Ah, hah! The offending digit.
Hawkeye: So, in spite of all the training films and lectures, you went out and got yourself an ingrown toenail instead of saving yourself for marriage.
Lt. Chivers: Yes, I'm afraid so.
Hawkeye: Well, you came to the right place, Lieutenant.
Lt. Chivers: Yes, I've been told.
B.J.: Very often these things are done in sleazy back rooms in Cuba. We're clean and safe.
Lt. Chivers: Doctors.
B.J.: How's the...small problem?
Lt. Chivers: Splendid.
B.J.: You do understand, of course, that your toes should have nothing to do with any other toes for at least a month.
Frank: Think the sun shines outta your bellybutton, don't ya?
Hawkeye: I'm having it corked.
Margaret: Major Burns handles our most difficult cases.
Hawkeye: Which is only fair. He's our most difficult doctor.
Radar: (on the phone) Hey, listen, can you speak up a little bit, somebody's trying to kill me!
Lt. Chivers: Thievery's getting quite out of hand. Last week I lost two machine guns and a tea cosy.
(Hiding under a Jeep during sniper fire)
BJ: This isn't happening!
Hawkeye: It feels like it's happening.
Hawkeye: Colonel, about the sniping...
Colonel Potter: We're doing all we can, I'm working at my desk and Radar's scared.
BJ: And that's all?
Colonel Potter: I can work twice as hard if you like. Radar, can you be twice as scared?
Radar: No problem, sir.
(Frank and Margaret are in Margaret's tent)
Hawkeye: (from outside) Frank?
BJ: You in there?
Frank: (whispering) They're trying to catch us at something!
Margaret: We're not doing anything.
Frank: Oh yeah. Who'd have thought?
During one of the sniper attacks, Margaret looks out of her tent. When she does, you can see Frank inside cheating at gin.