''Secret Army'' is a 1970s drama centered around a WorldWarTwo Belgian resistance group called Lifeline, operating in and around Brussels. Parodied by the sitcom ''Series/AlloAllo'' [[WeirdAlEffect so successfully that the sitcom is more well-known than the original.]]

----
!!This show provides examples of:
* AntiVillain: Brandt definitely qualifies as a Luftwaffe officer who prefers subtler methods over brutality. Reinhardt is also this but is also the Cynic.
* ArtisticTitle
* BittersweetEnding: [[spoiler: Lifeline successfully remained hidden throughout the occupation of Belgium. But Monique has fallen out of love with Albert and moves to Britain, Natalie has lost both her parents and her two love interests, and the honourable Reinhardt is executed by a revenge seeking Kessler on trumped up charges. [[KarmaHoudini Kessler then escapes with his mistress.]]]]
* BlackAndGreyMorality: Many of the Germans in this series are variously {{Punch Clock Villain}}s or those who believe MyCountryRightOrWrong. Even the nastiest character, Kessler the Gestapo chief has depth to his character. He is flawlessly sweet to his girlfriend, unlike Resistance leader Albert, who is quite ghastly to his. The various resistance groups argue among themselves and contain some rather nasty individuals. The Communists in particular are shown as backstabbers and Lifeline send British pilots home so they can continue bombing German cities. Lifeline also think nothing of [[spoiler: killing a single mother in a hit and run before she could alert the German authorities to a hidden airman in series one.]]
* BritishBrevity: Something of an aversion. While the show only ran for three seasons, those seasons were sixteen, thirteen, and fourteen (counting the unaired "What Did You Do in the War, Daddy") episodes, respectively.
* CaliforniaDoubling: Many Belgian set countryside scenes were filmed in Cambridgeshire due to the similarity of the landscape and the fact that the nearby tourist railway was home to a large number of 1940s period accurate European steam trains.
* ChristmasEpisode: The Episode "Guests at God's table" in series two. It is also the episode in which Monique recognises and acknowledges the MoralDissonance of their activities.
* CodeName: Lisa's - and, later, Albert's - is Yvette.
* TheCynic:
** Reinhardt is probably the most cynical character in the whole series. A trait that makes him the only character in the whole series whose openly defiant towards Kessler.
** Brandt becomes this as time goes on and the war takes its toll on him.
* DirtyCommunists: The Communist resistance are shown in an extremely negative light. Particularly [[spoiler: when they tip off the Gestapo so that they shoot Francois when he discovers Max Brocard is working closely with them.]]
* DramaticDownstageTurn: Quite a few of these.
* DressingAsTheEnemy: Happens once in an attempt to destroy a V2 Rocket site. Also happens throughout the series as German officers pose as British airmen in attempts to expose lifeline.
* DrivenToSuicide: [[spoiler:Brandt]] after implication in an attempt to kill Hitler.
* DuringTheWar
* FinalSolution:
** An early episode of the first series touches on The Holocaust where Curtis attempts to help a Jewish family escape from Brussels.
** Brandt also talks about it with Kessler; he is horrified by it. But Kessler tells him to shut up.
* FirstNameBasis: When John Curtis is first introduced, Yvette refers to him as 'Mr. Curtis', later moving onto 'Curtis', and finally just 'John'. Later, Bradley asks to be addressed by his first name, Nick.
* GlamorousWartimeSinger: Monique becomes this from series two onwards as the Candide moves from a cafe to a new upmarket venue. Aided by the fact that [[TheCastShowOff actress Angela Richards wrote and sang many of the songs]].
* HarmlessLadyDisguise: An airman is disguised like this so makeup can be used to cover up his heavily scarred face.
* InstrumentalThemeTune
* KilledOffForReal: [[spoiler: At the beginning of series two, Yvette is killed in a bombing raid. Also, Reinhardt in the final episode, as he is executed by a firing squad orchestrated by a revenge hungry Kessler.]]
* KnightInSourArmor: Natalie.
* LaResistance: The Belgian resistance is shown accurately to be not one group, but a variety of them, with different motivations and methods.
* LastNameBasis: Kessler, Brandt, Reinhardt, Curtis, Bradley.
* NaziHunter: ''Kessler'' was a sequel set in the (then) present day in which journalists, a German police officer and a Jewish girl hunt down Kessler.
* {{Nephewism}}: Sometime prior to the first episode of the show, Yvette's parents [[spoiler:(and [[TheLostLenore fiancÚ]])]] died and Yvette moved in with her aunt and uncle.
* OfficerAndAGentleman:
** Captain Durnford is this in the third and final series as well as being a ReasonableAuthorityFigure considering that he [[spoiler: prevents Monique from having her head shaved by a lynch mob]]. Kessler is also this but only towards his girlfriend.
** Luftwaffe officers; Reinhardt and Brandt.
* PetTheDog: Kessler has his moments with Madeleine.
* PutOnABus: [[spoiler:In the finale of season one, to escape to Switzerland, Curtis poses as the driver of a bus full of Hitler Youth on a day trip. [[LongBusTrip He never returns, despite mentioning that he probably will]], and is only ever mentioned again a few times.]]
* TheQuisling: The Lifeline crew pretend to be quislings as a cover for their resistance activities.
* ShownTheirWork: Many of the more fantastic escape plots were based on real attempts used by Allied airmen.
* SnarkKnight: Reinhardt is this towards Kessler, making him one of the most interesting characters in the series.
* StockFootage: The same footage of a Mosquito fighter plane is reused over the course of the final series.
* SuspiciouslySmallArmy: The Occupation forces of Belgium never really amount to more than about fifteen members of a bizarre SS/Wehrmacht unit. Major Brandt is supposed to be in charge of a Luftwaffe police unit, yet never seems to have any Luftwaffe personnel.
* ThoseWackyNazis: Subverted considering that most of the Nazi characters are well rounded, even Kessler.
* TrainEscape: Of a sort. In an episode in series two, a British airman steals a locomotive from a railway yard to escape German search parties.
* UndergroundRailroad: Helping Allied airmen escape capture and return to friendly territory.
* UnrequitedLoveSwitcheroo: [[spoiler: Monique starts off as Albert's mistress hoping he will abandon his wife and leave with her. However the war ends with Albert free to marry Monique, who had grown tired of waiting and leaves with Captain Durnford.]]
* UnresolvedSexualTension: [[spoiler:Yvette/Curtis]] in the first series, and [[spoiler:Natalie/Bradley]] in the third.
* VideoInsideFilmOutside
* VillainousCheekbones: Everyone in this show has great cheekbones, villain or not. In particular, Yvette, Curtis, Natalie, and Brandt.
* WarIsHell: Many reminders of this throughout the series, The protagonists often fail.
* WhatHappenedToTheMouse: During the evacuation of Brussels, Kessler's military assistant Wullner is seen leaving with him. In the next episode he has disappeared.
* WoundedGazelleGambit: A tactic played by undercover Germans pretending to be Allied Aircrew. Kessler takes this to the extreme and breaks the arm of one such agent so his cover will look more convincing.
----