Capt. Mainwaring gives a lecture on field craft in the vicar's garden, covering what to eat and how to erect a tent. Later, apart from having to put up with the vicar, verger, Hodges and a gang of boy scouts, their field manoeuvres are also interrupted by three German airmen who have been shot down and are trapped in their dinghy in the middle of the lake. "Hӓnde hoch! Hӓnde hoch!"