to Rodrigues' HQ. Later that night having been missing all afternoon, he returns to take the platoon through the tunnel and they end up in the food stores. Walker is impressed, and it isn't long before the HQ is captured. On the train home, Mainwaring is relieved to find himself in his men's good graces again, though laments that he felt the platoon deserved a more tangible reward. Walker then reveals that he is fully laden with food as whilst the others were dealing with Rodrigues, he was cleaning out the stores. 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 Pike Alan Tilvern as Captain Rodrigues Alan Haines as Major Smith Colin Bean as Private Sponge Notes The opening shot of the episode was taken from The Titfield Thunderbolt released in 1953. Stock footage was required as the location being used for their arrival was Wendling railway station, which had recently been closed by British Railways. Wendling station was also used on the episode "The Day the Balloon Went Up". The area where the main exterior filming took place was also used for the new shots for the end credits (necessitated as the end credits for the previous two series had been filmed in black and white). A reminder of this episode was therefore present for the rest of the run of Dad's Army, with the cast walking past the trees in front of which the Spanish Captain is briefly seen standing holding a megaphone, and the shot of the platoon running across an open heath was used at the very end of all subsequent episodes under the producer's credit. The idea of the platoon getting lost on their way to a training base and subsequently missing supper and breakfast was re-used in the 1971 film. When the platoon are trying to find the battle school, they are whistling the tune of "Who Do You Think You Are Kidding, Mr Hitler?", the opening theme song of the series. Historic background The "Battle Camp" is similar to the school of guerrilla warfare that existed in Osterley Park at the beginning of the war. Like the one in the episode, the real life camp instructed Home Guardsmen in irregular warfare in case of