A misread map leads the platoon to a barn marked as a target for artillery practice. Jones and Godfrey try to stop the firing by 'phoning, but Godfrey cuts the wire. Jones must reach the barn before it is blown up.

To boost morale, Mainwaring holds a party in his home. A bomb hits the bank during the party; thousands of pounds must be counted and guarded by the party guests, then taken to the Eastgate branch by horse and cart.