in Mainwaring's office about Franks's feet, and asks him to ask Mainwaring to not let Frank go on any more marches. After his mother storms off, Frank apprises Wilson of his plan to avoid a twenty-mile march on Saturday: swap Mainwaring's boots over for a half a size smaller. Wilson thinks this is a good idea, not realising that the rest of Jones' section have had the same idea. Jones' section enter Sedgewick's Shoe Shop, where Mainwaring buys his boots, and ask Mr Sedgewick for a pair of size 7 boots for Jones, but they must be the same sort that Mainwaring has. While he's looking for a pair, Godfrey pretends to feel faint, and Mr Sedgewick goes out back to get a glass of water, leaving the pair of boots on the stool. Jones scrambles up the ladder to try to find a pair of shoes half a size smaller than Mainwaring's, but then realises he does not know Mainwaring's size in the first place. Sedgewick returns and gives Godfrey the water. He says it is not enough, and Sedgewick reluctantly goes to fetch another one, but the men have forgotten to ask about Mainwaring's boots, and are shocked when Sedgewick comes back with a full jug. Jones asks about Mainwaring's shoe size and he comments that he takes a 6½. Between the four of them, Jones' section finish the jug and ask for some more. As Sedgewick trudges out, Jones searches desperately for a size 6, eventually finding one. When Sedgewick returns, they blame the mess on a mouse, and quickly make their escape. Later, Pike and Wilson arrive and initiate the same plan, with every detail exactly the same. Wilson is therefore surprised when Sedgewick knows that he is feeling faint and goes out to get a glass of water. The next morning, Mainwaring arrives stiffly, wearing the pair of size 6 shoes. He hobbles into the office, just as Mr Sedgewick arrives with the pair of boots he left for repair last week: a 6½. The men joke with Mainwaring, not realising the truth, even when Mainwaring jovially tells Jones to lead the men off on their twenty-mile march. Cast Arthur Lowe as Captain Mainwaring John Le Mesurier as Sergeant Wilson Clive Dunn as Lance Corporal Jones John Laurie as Private Frazer James Beck as Private Walker Arnold Ridley as Private Godfrey Ian Lavender as Private