Pte. Fraser loses the butterfly spring from the platoon's Lewis gun, and fears it is trapped inside a coffin with the late Mr. Blewitt. Episode aired Dec 4, 1969 *Note While Mainwaring is lamenting the loss of the Lewis Gun as an air defence weapon, Walker mentions that the platoon are not allowed to fire at enemy aircraft anyway. This appears to be a change implemented after the events of The Bullet Is Not for Firing (1969).