[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/doughboys12_9432.png]]
[[caption-width-right:350:Buster Keaton swallowed by mud.]]

''Doughboys'' (1930) is a film directed by Edward Sedgwick and starring Creator/BusterKeaton. Keaton plays Elmer Stuyvesant, a lazy aristocrat who cares only for wooing Mary, a local secretary. Mary is not too impressed with Elmer, but bigger problems soon arise when the United States enters UsefulNotes/WorldWarI. Elmer joins up and has various comic misadventures in boot camp and in France. Mary, who has also joined up as a morale worker, is impressed by Elmer's patriotism, but the war intervenes.

''Doughboys'' was Keaton's fourth starring vehicle for MGM and his second talkie. Critical opinion is divided on this film: Creator/LeonardMaltin called it the worst of Keaton's career while Keaton himself considered it his best talkie (admittedly a low bar). It is loosely inspired by Keaton's experiences as a soldier and entertainer in France, and was the last MGM film with which Keaton had any creative input.

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!!Tropes:

* AshFace: Sgt. Brophy has one after a grenade thrown by Buster explodes in the American trench.
* ContrivedCoincidence: Buster meets his old valet, a German, in the opposite trench.
* CreatorCameo: Director Edward Sedgwick plays the camp cook.
* DescriptionCut: An American officer tells his French counterpart "We are proud to be with you in your sunny France", and the camera cuts to show Buster's unit marching through a Biblical rainstorm. Later, when the men have gone into the trenches, their officer says "This is a quiet sector." Cue immediate heavy German bombardment.
* DrillSergeantNasty: Sgt. Brophy, the hot-tempered drill sergeant who repeatedly bawls out poor bumbling Elmer.
* ExtraExtraReadAllAboutIt: Used word-for-word as Elmer's ineffectual courting of Mary is interrupted by newsboys selling papers announcing American intervention in the war.
* {{Fainting}}: Elmer and several of his comrades do this when Sgt. Brophy, during drill, gives an overly detailed description of bayoneting someone.
* GentlemenRankers: Elmer is a very rich young man who blunders into enlisting by mistake (see UpperClassTwit below).
* HappyEnding: Not only has Buster married Mary and started his own business with his Army buddies, but Sgt. Brophy is his janitor.
* IdleRich: Elmer lives off his family's money, which is one reason Mary rejects him.
* MathematiciansAnswer: Elmer tends to give these.
--> '''Army recruiter''': Who's the nearest relative?\\
'''Elmer''': My sister. She lives right around the corner.
* NotWhatItLooksLike: Buster, tossed out of his billet, wanders into a random cottage and finds a bed. It turns out the next morning to be the second bed in a young woman's room, and her father is pissed.
* ShellShockedVeteran: Used for the closing gag, weirdly enough. The sound of a rivet gun sends Buster and all his old Army friends diving for cover, and causes Sgt. Brophy to shift from servile janitor back to antagonistic DrillSergeantNasty.
* UpperClassTwit: Dimwitted Elmer, who enlists in the Army by accident when he thinks he's hiring a chauffeur. The scene where a doctor at the recruiting center asks him to strip, and Elmer finally realizes something's wrong, is a highlight of the film.