Advance to the Rear (1964)

Disgraced Union Captain Jared Heath and his indifferent superior, Colonel Claude Brackenbury, find themselves demoted after a series of battlefield blunders. Their new task involves leading a mismatched team on a secret mission to safeguard a U.S. Treasury transport. The situation grows even more precarious with the presence of Martha Lou Williams, a Confederate spy who cleverly disguises herself as a prostitute. As Heath and Brackenbury navigate this chaotic assignment, their ineptitude and unexpected challenges put their mission—and their lives—at risk.