The guys from the 69th Infantry are an easy going bunch but they'll have to shape up for the "maneuvers". They've lost the mock "war" fourteen times already and Fraeulein Liesl and other lovely distractions make them forget all about the "maneuvers" once again.
Major Benson Winifred Payne is being discharged from the Marines. Payne is a killin' machine, but the wars of the world are no longer fought on the battlefield. A career Marine, he has no idea what to do as a civilian, so his commander finds him a job - commanding officer of a local school's JROTC program, a bunch of ragtag losers with no hope.
Hard-luck cabbie John Winger, directionless after being fired from his job and dumped by his girlfriend, enlists in the U.S. Army with his close pal, Russell Ziskey. After his barely satisfactory performance in basic training, the irreverent Winger emerges as the figurehead for a ragtag band of misfits. However, his hijinks threaten to cause an international scandal when he inadvertently commandeers a military assault vehicle behind enemy lines.
It's the last day of Camp Firewood's season, but there's still time for the big talent show, a little romance… and for everyone to be wiped out by the piece of NASA's Skylab that's hurtling toward Earth.