Revealing mistake: When Sherwood has died on the gurney, with Roberts holding his hand, after breathing stops, you can see the bandage on his neck still jumping in time with his pulse.
Visible crew/equipment: As the camera pans around the bed in Margaret's dream, you can see the camera man and equipment reflected. Also, when the soldiers march past, the shadow of the microphone rig plays across each one as they pass the bed.
Character mistake: Aggie says she was there when Silly Putty hit the market in 1949. It hit stores in 1950.
April Fools - S8-E25
Continuity mistake: As Potter asks Hawkeye about stopping the jokes, his hand is up by Hawkeye's shoulder. After the angle changes, his hand is around waist height.
Are You Now, Margaret? - S8-E2
Continuity mistake: After Hawkeye, BJ, and Charles enters Margaret's tent, Charles steps from behind Hawkeye to look at Williams. A moment later, after the angle changes, Charles steps from behind Hawkeye again.
Are You Now, Margaret? - S8-E2
Factual error: Then camera Klinger is using is not period correct. Those Brownie cameras were not around at that time.
April Fools - S8-E25
Other mistake: When Charles, BJ and Hawkeye steal Margret's tent, what's left is a frame of wood, including roof beams. From other episodes we know that the tents are held up by a wooden frame around the edges and a center pole. We even know for a fact that Margret's tent is built that way, because in an earlier episode Hawkeye and Trapper saw through the center pole of Margret's tent. We also know that the construction principle of the tents hasn't fundamentally changed since then, because when Hawkeye finds the oatmeal in his boot earlier in the same episode, you can see the center pole of the Swamp.
Good-Bye Radar: Part 1 - S8-E4
Visible crew/equipment: When Radar gets back to the 4077 and goes to the office with Klinger, just as he walks into the doorway the shadow of the moving boom mic can be seen on the wall at the right side of the screen.
Are You Now, Margaret? - S8-E2
Visible crew/equipment: When Williamson, the Congressional Aide, is in Colonel Potter's office questioning Margaret about Wally, right after Hawkeye makes the comment about liberty and justice for all, in the next wideshot as Williamson walks to the other side of the room the T-marks and chalk marks can be seen on the floor.
Visible crew/equipment: When General Haggerty walks into the mess tent and stands beside Colonel Potter, the chalk T-mark can be seen on the floor near his feet, and when Haggerty wants to meet the cook the chalk mark can be seen on the floor where Conway stands.
Continuity mistake: While Father Mulcahy, Margaret, BJ, and Hawkeye are in the mess tent, when Colonel Potter walks over both of his shirt pockets are unbuttoned, but when he sits down the right pocket's buttoned up.
Visible crew/equipment: After BJ and Hawkeye have tasted the Spam Parmesan, when Klinger calls the cook over, in the shot of Conway the edge of the tent set can be seen at the top right corner of the screen.
April Fools - S8-E25
Continuity mistake: In Potter's office, after Potter gives his orders, and checks Hawkeye, his hand is up. A second later it's down.
Continuity mistake: After uncovering the motorcycle, there's only the tan chicken around. A moment later, Ralph has a brown chicken in his arm that wasn't there before.
Continuity mistake: As "Ralph" gets the chicken off the tarp covered motorcycle, he goes to pick up the egg with his left hand. After the close up, he does it with his right.
Visible crew/equipment: As Hawkeye, BJ, and "Ralph" come over to help the farmer, the shadow of the boom mike is seen on the ground at the bottom right side of the shot.
Continuity mistake: In Rosie's Bar, the lettering reading "GI CLASSY" is in thick letters. From the outside, the lettering is thin.
Continuity mistake: When Mr's Li first threatens Klinger with a pitchfork in his office, it has four tines. A close up shows a completely different five tine fork. Then back to the first one.
Continuity mistake: When "Ralph" has Hawkeye and BJ at gunpoint, saving their lives, the scenery behind them changes several times. Sometimes there's the road and a few trees. Then there's no road and a lot more trees and shrubbery.
Continuity mistake: When Mulcahy is describing a person who was "quite a Bozo" to Potter, Potter realizes who he is referring to. Mulcahy's arm is close to the table. When the camera cuts to Mulcahy's face, his mug is close to his face.
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.