Visible crew/equipment: As Hawkeye walks over to the Colonel, there appears to be a lighting rig, or a reflector, over the Colonel's cot in the upper left of the shot. (00:20:35)
Visible crew/equipment: As Hawkeye is first approaching Danker during the triage scene, a boom mic can be seen at the top of the screen.
Continuity mistake: In Margaret's tent, when Charles is toasting Margaret, his hand alternates positions between the close ups, and the wide shots. In the close ups, he's holding the wine glass by the bowl. In the wide shots, he's holding it by the stem.
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.