- Ensemble Dark Horse: Lt. Hubert Gruber, largely for his countless Ho Yay moments with Rene and for being the most adorable "nazi" in fiction.
- Faux Symbolism: Maria or René implies Gruber isn't interested in her but what they brought: and they pull out the sausage...
- Germans Love David Hasselhoff: Although the series was extremely popular in Britain and overseas, it was especially so in Portugal. According to this article, it was because the series was seen as a parody of war movies which put every one, villains and heroes, the good and the bad, as equally incompetent (and not specifically of Secret Army), at the same time as using a revue-style kind of humour (revue being at the time very popular in Portugal, albeit slowly going out of style with other TV series which were contemporaneous with Allo Allo on Portuguese telly). In fact, when Gorden Kaye had his car accident, it was front page news in Portugal, and a BBC spokesperson was reportedly surprised by the number of Portuguese journalists calling in to inquire about Kaye's condition!
- Hilarious in Hindsight: Womanizing René is usually appalled whenever he sees that Lt. Gruber is hitting on him. In the mid 80's Gorden Kaye admitted that he is, in fact, homosexual. (And Guy Siner is not).
- Ho Yay: Gruber towards René.
- Occasionally, some of the other Wehrmacht soldiers towards Gruber, particularly when he plays the piano.
- "Weird Al" Effect: The series was conceived not as a comedy about La Résistance but as a parody of British dramas about them, specifically the BBC's 1977-79 Secret Army, which was popular enough to have its own sequel, Kessler. However, Secret Army ran for only three series and has been largely forgotten, whereas Allo Allo lasted for ten years.
- The Woobie: Von Smallhausen and especially Lt. Gruber despite them being Nazis too.
- Woolseyism: In Sweden, the show was called 'Emliga Armén ("Lame Army"), a pun/French-accented pronunciation of Hemliga Armén (the Swedish translation of Secret Army).
YMMV / 'Allo 'Allo!