Eddie Albert guest stars as an American WWI veteran living in France with his French wife he met while soldiering in the previous war. During the shelling from a Big German gun nearby he becomes confused and believes he is still fighting WWI.
Lee Marvin guest stars as a sergeant in command of a small demolition team that Saunders and his squad is ordered to take behind German lines to destroy a bridge. Lee Marvin does not believe the squad is large enough to handle the job of getting him to the bridge and back alive. He requests a platoon but is refused by Lieutenant Hanley. Marvin submits but has a huge chip on his shoulder due to a close friend being killed while on a similar mission. He has no confidence in Saunders or his men to get the job done and frequently ridicules them during the mission.
