A genre of FanFiction in which we find our plucky young heroes fighting in a large military conflict, whether they want to or not. These fics almost always involve the main characters joining the military in some way, and almost always involve a focus on the weapons, tactics, and politics involved in war and how the characters react to them -- as opposed to the characters themselves. Of course, this is helped a long quite a bit if said characters are ''already'' in the military.
This comes up ''a lot'' in series involving [[WhoWantsToLiveForever immortals]] (where this often expands on said immortal character's {{Backstory}}) and/or TimeTravel combined with [[HollywoodHistory Historical Fics]].

GunPorn is entirely optional.


[[folder: Anime and Manga ]]

* [[Fanfic/{{Downfall}} Downfall]] of Bleach fandom, takes a far more realistic outlook on the Winter War- and is bitterly violent, in both ideaology and combat.
* ''FanFic/WinterWar'' is another Bleach War Fic, this one focusing on LaResistance after [[TheBadGuyWins Aizen's forces win the Fake Karakura Town battle]], [[AllYourBaseAreBelongToUs Seireitei is occupied]], and the rescue party to Hueco Mundo fails.
* [[http://www.fanfiction.net/s/3994865/1/Ranma_Goes_To_War "Ranma Goes to War"]] and its first (but not second) sequel, in which Ranma, Ryouga, and Kuno get drafted into a conflict against North Korea.
* Given what subject manner the canon content was original inspired by, it probably isn't too surprising that ''Webcomic/AxisPowersHetalia'' has many fics of this nature, running the gambit of world history.
* The ''Fanfic/PokeWars'' series is, as the name indicates, a set of war stories set in the ''Franchise/{{Pokemon}}'' universe. It's not about war between humans, but between a faction of Pokemon that decided that humans have to be eradicated no matter what, and the humans and Pokémon allied to them. The initial stories are more of a survival action genre, while the ExpandedUniverse details a proper war effort where both factions are truly established.
* The ''[[http://www.fanfiction.net/s/3801878/1/Brothers_in_Arms_The_Eastern_World_is_Exploding Brothers In Arms,]]'' the ''Manga/SchoolRumble'' gang goes to Korea! And it has a [[http://www.fanfiction.net/s/4451616/1/Brothers_in_Arms_II_The_Balkan_Inferno sequel]].
* ''FanFic/Zero2ARevision'' is somewhat a ''Digimon 02'' war fic, there things goes much more bloodier than the actual series. It gives us questions of what would happen if the Digital Emperor was more sociopathic and had [[NukeEm nuclear weapons]], if Demon attacked the Real World with a ''real'' invasion army, if [[spoiler: Devimon returned from the dead and digivolved to a mega]], if the [[NightmareFuel Flood]] and the [[TheAlliance Covenant]] from the ''Franchise/{{Halo}}'' universe decided to pay a visit, if [[OurVampiresAreDifferent Malo Myotismon]] had the power of a [[AGodAmI God]] and so on.
* ''Fanfic/TheTSABActurusWar'': The [[Franchise/LyricalNanoha TSAB]] goes to war against the [[PeoplesRepublicOfTyranny Democratic Republic of Acturus.]]
* ''Fanfic/TheFaceless'' is a ''Manga/DeathNote'' WarFic where the human race is dying out while they kill each other [[NietzscheWannabe over whether or not they should kill each other]] [[BrokenMasquerade to serve the Gods of Death.]]
* Considering ''Anime/MobileSuitGundam'' 's (and its numerous series) war drama settings, as well as the WarIsHell message, its no surprise to see many fanfics set during wartime, whether they're side stories, sequels, or even prequels to the wars already seen.


[[folder: Crossover ]]

* FanFic/ReunionsAreABitch is probably one of the best examples in the IntercontinuityCrossover category. Featuring what has got to be the most detailed (and, as a consequence, [[ArchiveBinge one of the longest]]) description and execution of a crossover between ''Series/StargateSG1'' and ''Series/{{Battlestar Galactica|2003}}'' ever made. For lovers of realism, politics, and massive space battles it's a must. Can be read [[http://www.fanfiction.net/s/3546854/1/ here]].
* ''[[http://www.furryconflict.com/ ''Trek Wars: The Furry Conflict]]'' [[ExactlyWhatItSaysOnTheTin is exactly that]]: a pitched conflict of good and evil across two galaxies in a dystopic alternate timeline where the UFP and the Empire are whaling on each-other with everything they got and everyone (save for [[StarfishAliens a few Star Wars species]]) is a furry. Notable for being one of the longest running (and by longest, we mean it updates maybe twice a year) crossover series on the net.
* ''[[http://bladesquall.deviantart.com/gallery/29535894 PonyCraft: Friends of Equestria]]'' is a crossover of ''VideoGame/StarCraftII'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' (as ''VideoGame/StarCraft'' is a war game, well�). Here, Twilight also has to learn how to be a leader.
** There is also ''Fanfic/AceCombatEquestriaChronicles'', with Rainbow Dash being TheHeroine.
* [[http://www.fanfiction.net/s/2177824/1/The_Last_of_the_Cliffhangers_Unit The Last of the Cliffhangers Unit]] featured the cast of ''Series/HigherGround'' in the FutureBadass arc of a '''''largely''''' [[DeadFic uncompleted]] MegaCrossover in which Scott's [[AbusiveParents stepmother]] Elaine is a demon general and the Cliffhangers are a Special Forces Unit. The fic really only covers the beginning and the end and doesn't really going into the complexities of the actual meat of the actual ''war'' part of it. The [[http://www.fanfiction.net/s/2965745/2/Curse_of_Life_Miracle_of_Death second chapter]] of ''Curse of Life, Miracle of Death'' takes place in the same timeframe (the first and third chapters were largely [[SelfInsertFic self-insertion]]).
* The whole idea of ''Fanfic/PinkAlert3'' is a huge World War breaking out between the icy [[RedsWithRockets Soviet Pony Republic]], the battered [[TheAlliance Holy Equestrian Alliance]] and the underwater [[TheEmpire Aquestrian Empire]]. The magic begins when Soviet tanks invade the Alliance without warning (but possibly not without justification, considering what [[PoliceState life is like for the ponies and other creatures living there]]) and the Equestrians mobilize their armies, including their ridiculously overpowered Air Force, to defend themselves. Further into the backstory, there was also the Pink Rebellion, a Communist uprising against the unchallenged tyranny of the Alicorns. It failed, but perhaps luckily, led to the Republic being established in the Frozen North by the surviving rebels.
* The backstory of ''FanFic/FalloutEquestria'' involves the [[WesternAnimation/MyLittlePonyFriendshipIsMagic Mane Six]] becoming Equestria's military leaders under Princess Luna after Princess Celestia abdicates following the [[DespairEventHorizon Littlehorn Massacre]], leading to a genocidal total war against the zebra nation. [[spoiler: They fail miserably, all of their combined [[FatalFlaw personality flaws]] and [[FishOutofTemporalWater Luna's mismanagement]] contributing to [[SugarApocalypse Equestria's ruin]], with four of the one of them disappearing, two dying horrific deaths during the apocalypse and the other two being consigned to staying alive and witnessing the downfall of their world [[AndIMustScream without being able to do]] ''[[AndIMustScream anything]]''. The "luckiest" one gets locked in a Stable.]]
* [[http://bbs.stardestroyer.net/viewtopic.php?f=9&t=140176 Time War]] chronicles the events of the [[Series/DoctorWho Time Lords]] being dropped into the ''Franchise/StarTrek'' universe at the end of the last great Time War.
* The plot of ''[[FanFic/MLPNextGenerationKnowFear MLP Next Generation: Know Fear!]]'' and its sequels is driven by a war between Equestria and the griffons.
* ''FanFic/TheTerminatorsArmyOfLegend'' is based around the trials and tribulations of an elite army from the moment of their inception and onward to present day. There are a large number of conflicts that occur throughout the series, but the most prominent is easily the Second American Civil War between [[PresidentEvil radical United States President Barry Mabao]] and the Terminator Militia. The Second Civil War spans two volumes, one of them surpassing quadruple digits in its page length. Even after the conclusion of the war, its effect still radiates even far in the future of the storyline.


[[folder: Films - Animated]]
* ''Fanfic/TwilightValley''. Yes, a ''WesternAnimation/TheLandBeforeTime'' war fic!
** [[http://www.fanfiction.net/s/2550278/1/Out_of_the_Shadows Out of the Shadows]] is even more of a war fic taking place in the ''Land Before Time'' universe there almost [[AnyoneCanDie everyone dies]], included the main characters.
* IceOnTheRhine. A ''Frozen'' fanfic starting from the assumption that Frozen is set during the Napoleonic Wars. It is a crossover with various other Disney films (though mainly ''Tangled''). In which Elsa builds a giant ice dragon to fight with Napoleon's armies at Waterloo, Anna is a semi-psychopathic soldier, and other such fun things.


[[folder: Film - Live Action ]]

* FanFic/RiseOfTheRedEclipse is a Franchise/{{Star Wars}} fic that has plenty of huge battles in space and on the ground while also trying to use realistic physics in place of the SpaceIsAnOcean tactics that Star Wars universe is infamous for at times.


[[folder: Literature ]]

* There's a ''Literature/GoodOmens'' fanfic series that sends [[NobleDemon Crowley]] [[http://daegaer.livejournal.com/tag/good%20omens%3A%20world%20war%201 to the trenches.]]
* The {{Literature/Worldwar}} fanfic ''FanFic/WorldwarWarOfEquals'' has The Race, thanks to a twist of fate, arrive in 2011 instead of [[UsefulNotes/WorldWarII 1942]].


[[folder: Live Action TV ]]

* ''{{Series/Firefly}}'' fanfic does this quite a bit, with the Miranda wave being the catalyst for a second major war between the Alliance and the Independents. Prequels or flashback chapters focusing on Mal and Zoe's wartime experiences are also common.
* The FanFic/GateworldVirtualFleet: ExactlyWhatItSaysOnTheTin, focusing mostly on the galactic and intergalactic conflicts in the future of the Franchise/StargateVerse.
* In ''Series/DoctorWho'', the Last Great Time War has never been reviewed in canon, save as a [[NoodleIncident Noodle Incident]] (for cost measures, the Time War lies according to Creator/RussellTDavies above the budget of the whole BBC in a year). Needless to say, this means the Eighth Doctor has some fanfiction about this occasion.
** With the reveal of the [[Creator/JohnHurt War Doctor]] he seems to be taking this role.
*** [[http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/TheLastGreatTimeWar ''The Last Great Time War'']] is a good example, revealing many mysteries about the Time War and striving to be the first fanfiction to cover it fully.


[[folder: Video Games ]]

* [[http://www.fanfiction.net/s/3162975/1/ ''CombatEvolution'']] is a ''Franchise/{{Halo}}'' fanfic that attempts to rewrite a well known event in the Halo canon . . . with ''really'', '''really''', REALLY expensive weapons systems. If you like GunPorn, you will LOVE this fic.
** Speaking of Halo, it has a crossover with Warhammer 40k called [[http://www.fanfiction.net/s/3678670/1/Chains_of_the_Kindred Chains Of The Kindred]].
* ''FanFic/{{Exoria}}'' is a distant, modern-day sequel to Franchise/TheLegendOfZelda series. Despite managing to stay true to the usual Zelda formula, such as item acquisitions, dungeon grinds, and boss fights, the author never fails to remind you that the story is set in the midst of a continental war, and things can get brutal.
* Played with in the Zelda fanfic TroperWorks/LibertyRock. Link goes off to help hold a fort in a neighboring country's civil war, but rather than focusing on the tactics, politics, or weaponry, the main focus of the story is on the characters' days besieged in the fort dealing with monotony, stress, and dwindling hope.
* ''VideoGame/MetalGearSolid3SnakeEater'' fanfic ''[[FanFic/TheJoyOfBattle The Joy of Battle]]'' is set during UsefulNotes/WorldWarII, which fits with [=MGS=] canon. Unlike the majority of [=MGS=] fics, especially those taking place during UsefulNotes/WorldWarII, ''The Joy of Battle'' averts most WarFic tropes in that the story is about the characters with war as a backdrop and a complication.
* Fanfic/TiberiumWars is one of the better known examples. A full-blown novelization of [[VideoGame/CommandAndConquerTiberiumWars one of the most popular RTS franchises out there.]]
* ''Armored Core'' fanfic ''[[FanFic/ArmoredCoreFromTheAshes Armored Core From The Ashes]]'' is set very closely after the events of Armored Core for Answer, and with the reformed ORCA winning.
* ''[[http://www.youtube.com/watch?v=7AHfj0uDrf0 Mario Warfare]]'', a retake on ''Franchise/SuperMarioBros'' in the style of modern military action.
* Numerous ''VideoGame/KerbalSpaceProgram'' fan-works and {{GameMod}}s.


[[folder: Western Animation ]]

* A lesser known example, but still worth mentioning, is the ''WesternAnimation/KimPossible'' fanfic [[http://www.fanfiction.net/s/2607139/1/ ''Horrors Of War'']]. Featuring everyone's favorite teen heroes, [[MyFriendsAndZoidberg and Josh]], traveling back in time to UsefulNotes/TheVietnamWar. Obviously, [[WarIsHell a certain combat trope]] is in full effect here.
* Popular in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fandom:
** ''FanFic/TheImmortalGame'', which is all about the Mane Cast leading one side of a war for control of Equestria (against Celestia and Luna's [[GodOfEvil parents]]). For bonus points, the original title was "Ponies Make War''.
** ''FanFic/EquestriaTotalWar'' features a full-on invasion of Equestria by Gryphonia.
** ''FanFic/AKingdomDivided'' cranks the heartbreak UpToEleven by having [[ExactlyWhatItSaysOnTheTin Luna rebel against Celestia]] after unrest owing to economic downturn and a belief that the elder Princess can't or won't symapthize with the poorer classes.
** ''FanFic/{{MANE}}'' is an alternate-universe story about the build up to, and aftermath of, a nuclear war between Equestria and their rival nation, the Union of Saddle Republics, or USR.
** There are ''many'' {{hate fic}}s falling into this category, written in response to ''FanFic/TheConversionBureau''. Turns out, having a massive barrier that's going to erase all human culture makes for fodder for war fics. The most prolific of ''Conversion Bureau'' war fics are likely ''FanFic/TheConversionBureauTheOtherSideOfTheSpectrum'' and ''FanFic/TheConversionBureauNotAlone''.
* ''Prince Iroh'' by Acastus. An ''WesternAnimation/AvatarTheLastAirbender'' fanfic which tells the story of Iroh's first big break in the Hundred Year War.