The platoon gets its turn at weekend training, for a bomb course. Captain Square convinces Mainwaring that officers shouldn't sleep with the OR (other ranks) so he puts up blankets for him and Wilson, just after he forbade the others to voluntarily 'spoil him'. Next, Square insists a captain can't join his men for beer, rationed to two pints for safety, which the men, especially Frazer, take for disloyalty. In Officer's Mess, Mainwaring naively volunteers to be 'made a cardinal', a rather cruel drinking game.