Private Walker is called up into the army and Captain Mainwaring does all he can to appeal the decision.
The platoon arrest a supposed Nazi agent, on charges of signalling to enemy air-craft.
Private Frazer receives an ill-advised promotion to Lance Corporal.
In these two shorts (from Christmas Day 1968 and Christmas Day 1970), Captain Mainwaring drills his platoon in physical fitness and assembles a choir to entertain the troops.
