Sometimes You Hear the Bullet - S1-E17
Henry Blake: All I know is what they taught me at command school. There are certain rules about a war, and rule number one is that young men die. And rule number two is that doctors can't change rule number one.
Gen. Barker: What are you doing?
Radar: Doing, sir?
Barker: D-O-I-N-G. Doing. What are you doing?
Radar: Uh, listening to you spell doing sir.
Barker: Doesn't Col. Blake mind you drinking his whiskey and smoking his cigars?
Radar: Oh, very much so, sir.
Barker: Then why are you doing it?
Radar: Well, I don't mind, and I figured as long as one of us was being reasonable.
Frank: Haven't you two anything better to do when you're off duty than to lie around and swill gin?
Hawkeye: Swill gin?! Sir, I have sipped, lapped, and taken gin intravenously, but I have never swilled.
Answer: It is actually Cencompac for Central Command of the Pacific. It is like the headquarters for all military activity in the Pacific Region (Japan, Korea, Okinawa, etc. The newer version of that is United States Pacific Command (USPACOM).
EMTurbo
And the abbreviations were used mainly by the Navy. Especially CENCOMPAC.
Https://en.wikipedia.org/wiki/United_States_Indo-Pacific_Command.