When Newkirk gets Schultz drunk as part of an underground mission, the corpulent sergeant is discharged for incompetence. The new camp sergeant -- a sharp-witted, no-nonsense type named Krebs (Norman Alden) -- poses a serious threat to Hogan's espionage activities. The POWs plot to discredit Krebs and restore the dumb and harmless Schultz without exposing their covert operations. Written by Laurence Marks, "Happiness Is a Warm Sergeant" originally aired on November 26, 1965. ~ Hal Erickson, Rovi