Rifle drill, boot polishing, hairy blues. Bed blocks, Rock lectures and the Rock who 'idly' wrote each answer on a blackboard, wiped it off, wrote the next one etc.
Those eyes down missed it. those looking for inspiration soon twigged.
Acidic water crossings, bent scaffold poles, tents with poles and guys.
Parachute rolls, dinghy drills, parades.
The main lesson?
Find a good hotel on away days and avoid sharing a room if possible.