* A retroactive example, of sorts. After discovering that Godfrey had been a conscientious objector during the First World War, Mainwaring is somewhat mean to him. He is then highly embarrassed, as [[spoiler:it later turns out that Godfrey, despite his refusal to bear arms during the conflict, still insisted he be allowed to serve as a stretcher-bearer. ''And then went on to earn the Military Medal rescuing injured comrades from no-man's land'']].
** Partly TruthInTelevision as Arnold Ridley, who played Godfrey, was a decorated war hero in WWI.
** And ''how'' does Mainwaring find out about Godfrey [[spoiler: being a stretcher bearer]]? By visiting Godfrey when the latter is in bed from smoke inhalation - which he received after rescuing Mainwaring from a smoke-filled building. Even though Mainwaring has been a JerkAss to him throughout the episode, he doesn't even hesitate before he makes his decision. Now THAT'S awesome.
* The ease with which Fraser, Jones and Mainwaring go to what they perceive as their certain death to slow down what they think is a German invasion force to give the regular army time to mobilize in ''The Battle of Godfrey's Cottage'' is as awesome as it is touching.
* The ShutUpHannibal reveal of Mainwaring's talent at playing the bagpipes that comes after a blistering TheReasonYouSuckSpeech from eternal complainer Fraser.
* Another Mainwaring moment in "Asleep in the Deep". [[spoiler:The Platoon have to get to a sick Godfrey but the way in is blocked by rubble and the ceiling could come down at any second. They draw lots to see who will have to take the dangerous task... and Mainwaring rigs it so he "wins". He's egotistical and frequently incompetent but he's brave as hell.]]
* Yet another in the motion picture, in which Mainwaring faces down a Luftwaffe officer while armed only with an unloaded pistol. [[spoiler:The German's gun was unloaded too, but neither of them knew the other's gun was harmless, and the German blinked first.]]
* And another in "Fallen Idol". While on a training exercise, Mainwaring accidentally alienates the rest of the platoon by following some bad advice from Captain Square (to the point several members intend to quit the Home Guard rather than serve under him). The next day, during the exercises, a mishap occurs and a live mortar is accidentally fired into Jones' van (which is filled with explosives). Jones mistakes the crash it makes for his signal to drive off. While still suffering from a hangover (brought on by Square encouraging him into a drinking game the night before), Mainwaring chases and manages to catch Jones on a bicycle and gets him to abandon the van before the explosion goes off. However, Jones accidentally crashes into a telegraph pole. And the commander warns it's a central pole, and the explosion will destroy it, wrecking communications across the entire country. Hearing this, Mainwaring runs back in the van, and starts searching for the live mortar with his bare hands among the grenades, knowing the whole thing could explode at any moment. His display of heroism manages to win back the platoon.
* After spending most of an episode being pushed around, Wilson [[spoiler:taking out three Irish men, who managed to beat up a good portion of the squad - and coming out (mostly) unscathed! Hell, it looked like the only thing the Irishmen did to him was bruise his knuckles with their faces!]]
* The end of the ''Dad's Army'' movie where the platoon manage to defeat three German pilots holding a church congregation hostage while the 'regular' forces merely dither.
* The flashback with Jones in the Sudan, [[spoiler:in which he saves his cowardly teammate, fights off two bandits and then drags him to the relief column]]. Hands down one of his finest moments.
* Wilson got another moment after [[spoiler:Warden Hodges began harassing Mrs. Pike. Wilson goes up to him and punches him in the face, much to the approval of most people present]].