Captain 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 with the vicar, verger, Hodges and a gang of boy scouts, their field maneuvers are also interupted by three German fliers who have been shot down and are trapped in their dinghy in the middle of the lake... ""Handi hoch! Handi hoch!""
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