and Carstairs (John D. Collins and Nicholas Frankau) (series 1–7, series 9) – Two British airmen who are trying to get back to the United Kingdom, their plane having been shot down. Emerging from where they are hiding, they say "Hello!" with an exaggerated upper-class English accent. When talking to one another, Fairfax or Carstairs always start with the words "I say, Fairfax/Carstairs...". On discovery of the tunnel to the British POW camp, all the café staff are trapped there, including the Resistance and the hostage German officers, who then all have to adopt exaggerated RP accents as POWs, with large moustaches and flying helmets. On inspection by the German camp guards, they stand to attention saying clichés like "Toodle pip! Good Show! Bang on! Old fruit!" Humour is also derived from the French not being able to understand what the British airmen are saying, in order to illustrate this, upper-class English accents and French accents are used to distinguish between the two languages. One of the minor characters of the show remarks on Fairfax and Carstairs' origin being from 402 Squadron, although in reality this was a Canadian RAF Squadron, whereas both characters are from England. In season 8, it is said that they have returned to England, but they return in the final season, having been captured by the Germans on D-Day. Herr Engelbert von Smallhausen Herr Engelbert von Smallhausen (John Louis Mansi) (series 2 to 9) – Herr Flick's assistant. Dressed exactly like Herr Flick but only half as tall. He also copies his exaggerated limp. He often suggests stupid plans and ideas, only for them to be put down by Herr Flick. He once delivered an out-of-date ransom note from the Resistance, saying "It vas tied around a brick and thrown at my head – I have only just regained consciousness!" He once turned up at Herr Flick's dungeon banging on the door without success. The door then explodes and he enters over the wreckage to say apologetically "I forgot my key!"; Herr Flick then berates him for the misuse of Gestapo dynamite. He is often sent on spying missions or to eavesdrop on the radio, but he likes listening to Tommy Handley. When hypnotised in one episode, he reveals that his real name is Bobby Cedric von Smallhausen. He studied at Oxford University some time before the war, making him (in Flick's view) a useful