Dad's Army

S03E14 Sons of the Sea

Capt. Mainwaring devises a plan for small armed patrols to disrupt enemy operations using a repurposed boat obtained from the bank. After conducting a practice run on the river, the team becomes disoriented in the fog. Believing they have crossed into enemy territory and are on the verge of being captured by the Germans, they are taken aback when they discover their true location.