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* One of the major themes of the ''Franchise/{{Gundam}}'' saga especially ''[[Anime/MobileSuitGundam0080WarInThePocket Gundam 0080]]'', ''[[Anime/MobileSuitZetaGundam Zeta Gundam]]'', and ''[[Anime/MobileSuitVictoryGundam Victory Gundam]]'' with the last two being the most harsh because YoshiyukiTomino was having CreatorBreakdown while making them. ''[[Anime/MobileSuitGundam0080WarInThePocket Gundam 0080]]'' [[{{Anvilicious}} beats you over the head]] with this trope. However, on the flip side, SomeAnvilsNeedToBeDropped, and it's overall one of the best Gundam series as a result of its utter bleakness. Which stems not from an anti war stance but Tomino's thoughts on Japan's actions in UsefulNotes/WorldWarII and its imperialistic actions which mirror that of Zeon's.
** An even more recent example is ''[[Anime/MobileSuitGundamSeed Gundam SEED]]'' which slides to the far end of the [[SlidingScaleofIdealismVersusCynicism Cynical side of the scale]]. War becomes humanity's excuse to perpetrate [[ForScience human experimentation]], [[NukeEm nuclear holocaust]], and [[FaceHeelTurn mass betrayal]]. Given that the war was started in the first place to commit genocide against a subspecies of humanity, [[spoiler:and it eventually evolves to the point where both sides refuse to accept each others existence and commit ruthless atrocities in an attempt to end all of mankind]], yes, war is indeed HELL.
** To quote Kamille Bidan (''[[Anime/MobileSuitZetaGundam Z Gundam]]'') in Dynasty Warriors Gundam 2: "Everyone's... dying. It wasn't supposed to be like this... Are you happy now? Are you satisfied? So. Who's gonna celebrate now, huh?" (He's actually talking to both Quattro, Scirocco and Haman at this point, as they're the respective leaders of each their factions. Yes, at this point he's willing to question his own commanding officer's motives.)
** The One Year War. It's the most famous war in the Gundam franchise, with half a dozen or more side-stories elaborating on it. In fact, in the course of the war, the Zeons are willing to drop a giant space colony, housing 3 million civilians, down on earth, killing the civilians in the colony with gas beforehand, and destroying quite a big portion of Australia, create giant machines that can kill thousands of people in seconds, and blame it all on the Earth Federation. In fact, they start the war by dropping a colony on Sydney, leaving a crater that can be seen clearly when Kou comes to Sydney in 0083, four years after the war. It doesn't get much better that most main characters in 0079-series are mentally scarred, or break down.
** Even Anime/MobileSuitGundamZZ. one of the goofiest, most light-hearted shows in the Universal Century, chronicles the slow descent into hell of a group of happy-go-lucky kids caught on the periphery of the conflict. By the end of the show, the survivors do manage to go on with their lives, but [[BreakTheCutie they ain't so happy-go-lucky no more]]. A couple even head off to the Jupiter colonies, in an attempt to get as far away from Earth and its wars as humanly possible.
** ''Anime/MobileSuitGundamF91'' deserves a mention, as when the colony is attacked by the Crossbone Vanguard, more than hundreds of people are killed at the beginning of the invasion.
** In the final arc of ''Anime/GundamWing'', Zechs and Trieze take command of the militaries of the colonies and the Earth respectively and launch a huge bloody war just to finally convince humanity that War Is Hell. Later works in the same setting show that the lesson didn't stick.
*** Also in Gundam Wing, an early episode has Wufei planting bombs in the trainee dormitories of a base. Said trainees were going to ship out tomorrow and had literally just graduated. We get to hear them all scream as the bombs explode, too.
* The Ishval Massacre in ''Manga/FullmetalAlchemist'' is wall to wall bodies; the Ishvalans are either being massacred or are killing the Amestrians in a last ditch effort to survive. By the end of the flashback everyone is left traumatized, and most of the rest are AxCrazy to begin with.
* ''Anime/MazingerZ'': From the opening narration from NewMazinger (an one-volume-long alternate manga version published in 1988): "A. D. 220X... Hostilities between north and south grow in fury as savage combat with new and ever more destructive weapons lays waste the once pastoral Earth. The remnants of mankind burrow deep beneath the surface. Their citadels, screened against the deadly bath of radiation, poke through the polluted soil like foul, mutant flowers. Their warriors, encased in giant combat armor against the air that once gave man life, live only to fight, and with luck, to fight again. Today, as every day, the flames of war rage in every corner of the globe. War without quarter. War without end. War for a race that has forgotten all other ways of life."
** The original series and its sequels -''Anime/GreatMazinger'' and ''Anime/UFORoboGrendizer''-had no gripes showing how much death and destruction war can generate.
** This is, actually, one of core messages of ''UFORoboGrendizer'', and it is delivered in a pretty heavy-handed way. The Vegans tried to take over Fleed to settle on it but their own weapons turned the planet into an uninhabitable, radioactive chunk of rock (and the scenes of the Fleedian genocide were especially NightmareFuel). The only thing their expansionist war achieved was the destruction of several planets and their own annihilation. The war scenes were depicted in a very harsh fashion. And several characters argued nothing could be gained from that conflict:
--->'''Hikaru''': “Why friends must fight each other? It’s all the same. It doesn’t matter who wins… There’s no way peace can result from this fight!”
--->'''Rubina''': "If this war continues, not only all the Vegans but Earth itself will be destroyed."
** This is a running theme in Creator/GoNagai mangas, particularly ''Manga/{{Devilman}}''.
* ''Manga/{{Naruto}}''. In fact, Madara said "For a child, war is hell". War was responsible for making Itachi who he is and also very much had something to do with Pain's motives. When the three Sannin met Nagato (Pain), Yahiko and Konan, [[MadScientist Orochimaru]] suggested killing them because only more pain and hell would await them [[spoiler:and tragically that turns out to be the case]].
** The Fourth Shinobi World War defines this trope when you hear the death toll of the Alliance forces for the ''first day''. [[spoiler: 40,000 Ninja and samurai died in a ''single'' day of fighting.]] But due to AMillionIsAStatistic, most people don't care unless a named character dies. As of chapter 615, [[spoiler: [[TheStrategist Shikaku]], Inoichi, Ao, Mabui, the entire Kumogakure village, and Neji]] have all died in the War [[spoiler:against Obito and Madara.]]
*** [[spoiler: Made even worse that the War is ultimately ''lost'' by the Alliance after Madara comes back to life. Most of the world is now trapped in Infinite Tsukuyomi now...tens of thousands of people died for ''nothing''.]]
** Flashbacks show that the era constant warfare that Hashirama and Madara grew up in was even ''worse'' than anything in the present day. The average life expectancy for soldiers and civilians alike was ''30'' thanks to the deaths of so many child soldiers. Illustrated perfectly in one page depicting [[spoiler:Hashirama's youngest brother Itama crying in fear while surrounded by a band of angry Uchiha, with the next panel showing his bloody corpse.]]
** One of the main themes of ''Naruto'' is that war is part of an everlasting CycleOfRevenge that has plagued humanity since the beginning of time. Love breeds sacrifice, sacrifice breeds hatred, and hatred breeds war. War is regarded as the source of everything's gone wrong in the world, and the evidence provided does not suggest otherwise.
* ''Anime/{{Zambot 3}}'' explored this trope. ChildSoldiers forced to handle weapons and fight a faceless enemy? Check. People dying suffering and dying the whole time? Check. People turned into human bombs? Check. Cities being destroyed? Check. Both sides battling among the ruins of cities already destroyed in previous battles? Check. Every side thinking the other side are the evil ones? Check. It is no wonder this anime was done by [[YoshiyukiTomino the creator of Gundam]] during one of his KillEmAll phases.
* And then Tomino took it up to eleven when he created ''Anime/SpaceRunawayIdeon''. A war between two sides starts cause a misunderstanding. The result? Tons of deaths, destruction, suffering, mindscrew and [[spoiler:the destruction of the universe.]]
* ''Anime/GraveOfTheFireflies''. Boy in his early teens and very young sister, left orphaned in Japan at the end of the Second World War. Things ''[[FromBadToWorse do not go well]]''.
** The Creator specifically said its NOT an Anti War film, what it really is a guilt trip to 80s Japanese Delinquents.
** That and the immense guilt he felt over surviving End-War UsefulNotes/ImperialJapan and not his sister. It's why his AuthorAvatar dies in the movie.
* ''Anime/PrincessMononoke'' could be described as a WarIsHell story disguised as a GreenAesop, because the main focus is on war between humans and {{Intellectual Animal}}s.
* ''Manga/{{Saikano}}'' is incredibly {{Anvilicious}} about this. [[SomeAnvilsNeedToBeDropped It]] [[TropesAreNotBad works]]. [[TearJerker Well]] for some.
* Some would say that ''Anime/NeonGenesisEvangelion'' is all about saying WarIsHell for ChildSoldiers, [[WhatDoYouMeanItsNotSymbolic possibly literally]].
* In a similar manner, some have interpreted ''Anime/PuellaMagiMadokaMagica'' as also stating the effects that war has on ChildSoldiers. This is most apparent in the character of [[spoiler:[[FallenHero Sayaka Miki]], whose view of fighting as a [[WarIsGlorious heroic and righteous act]] are quickly derailed once she realizes that most of her actions have meant very little to the people she swore to protect, [[ProtagonistJourneyToVillain and her character descends into darkness very quickly as a result.]]]]
* In ''Manga/NausicaaOfTheValleyOfTheWind'', most if not all the war scenes are drawn in explicit and gritty detail, often squeezed into tiny panels making them look as claustrophobic and uncomfortable as possible. Well, this IS a [[Creator/HayaoMiyazaki Miyazaki]] work...
* ''VinlandSaga'' delivers this message with surprising subtlety.
* ''NowAndThenHereAndThere'' dumps an innocent young protagonist into a world made hell by war. In this world children are the targets of atrocities committed by other children. Neighbouring villages are raided for vital supplies and young boys to be conscripted into the insane king Hamdo's army. Women and young girls are captured to be passed around to and raped by Hellywood soldiers as a reward for good performance in the hope that they will become pregnant and provide future soldiers and breeders.
* ''JinRohTheWolfBrigade'' paints a rather vivid image of a post World War Two Japan where the Nazis were victorious, with rioting in the streets, child terrorists and the realpolitica power plays with the CAPO and Public Security backstabbing each other. Bonus points for the main character [[spoiler:shooting his girlfriend rebel before a sniper killed both of them]].
* ''VoicesOfADistantStar'' and ''ThePlacePromisedInOurEarlyDays'', though they are less about the war and more about the people living in a war state. The former is about futuristic war, and the latter is about the UsefulNotes/ColdWar gone bad.
* ''FutureWar198X'' shows the effects of WorldWarIII on the soldiers, civilians, and the powers behind each country fighting, shattering Japan's NuclearWeaponsTaboo and getting SpaceBattleshipYamato's director's message across loud and clear: [[{{Anvilicious}} nuclear weapons and war are bad.]]
* The ''VideoGame/FrontMission'' expanded media, such as the ''Dog Life & Dog Style'' manga, are very much in the WarIsHell territory. In ''Dog Life & Dog Style'', the brutality of war in general is shown through as Kenichi Inuzuka, a Japanese journalist who winds up in the wrong place and wrong time to witness some of the worst atrocities in the midst of the 2nd Huffman Conflict and those who are affected by it. He brings out the truth of war to the world amidst censorship and to some of the people whom he interviews. The seinen manga goes from a violent form of war is hell to a psychological form. In the first volume alone, Inuzuka casually takes pictures of about every single atrocity of war, from open battlefield rape of some random girl to the amount of skulls hauled by a wanzer pilot to mark his kills. In the second volume, [[spoiler: a particularly tragic story shows the exploits of O.C.U. Captain Ren Akagi who supposedly saves a young woman, Kino Margo Seletskaya, from rape and performs a HeroicSacrifice to get her out of the warzone. It is then revealed that Kino was a prostitute who wasn't so much as raped as performing her trade on the field and that it wasn't the first time that happened. Thankfully, Ren survives but he does not walk out unscathed, losing an arm and two eyes as well as learning the unpleasant truth about her trade. Though he does get over it by finding Kino in another brothel and telling her to wait until the war is over.]]
* ''SoraNoWoto''. After six episodes of SliceOfLife, War comes knocking loudly on the door, leaves, and returns on Episode 11.
* ''BarefootGen'', anyone? This one portrays the bombing of Hiroshima and its aftermath, as experienced by a six-year-old boy and his family.
* The core tenet of the Third Squad of Shinigami in ''Manga/{{Bleach}}'' is that battles are something to be dreaded. They are a horrible, terrifying experience that should not be glorified. This is key to ensure that those who participate become so fearful of battle that they would rather find peace than seek war.
* While the ''Anime/MonsterRancher'' anime is a childrens' series, ''lots'' of monsters, good and bad, die in it, and the characters are shown that a past war nearly wiped out civilization as they knew it. When friendly characters die, it's often very upsetting, even traumatizing Genki on some occasions.
** The backstory has humans who grew proud and destructive, creating Monsters for anything that would suit their wants. Eventually they created Moo in an attempt to end the last war, which ended up nearly destroying the entire planet until they created the Phoenix to stop him—and what it took to defeat Moo involved destroying virtually everything. When Moo returns to finish what he started, great sacrifice is required yet again--this time on a personal level, with [[spoiler:the Searchers fusing together to become the Phoenix, and their consciousnesses ceasing to exist]].
* ''LegendOfGalacticHeroes'' emphasised this trope in various ways, from the protagonist's anguishing over the deaths of countless soldiers under his command right down to particularly graphic scenes of destruction that both warring factions experience.
* This is the chief theme of the ''{{Area 88}}'' manga and OVA. More generally, the series is about protagonist Kazama Shin's journey through hell after his best friend tricks him into joining a mercenary air force.
** Shin tells the base's resident ArmsDealer, [=McCoy=], that he'll go to hell for selling weapons. [=McCoy=] replies that he's already there.
* Parodied in ''Manga/SchoolRumble'' by being played completely straight...in a paintball war game/student film. The whole thing was ''supposed'' to be staged, but halfway through it seems like everyone forgot and started ad libbing. The thing started over an argument over [[SeriousBusiness whether the class should do a play or a maid cafe for the school festival]].
* This theme becomes increasingly obvious and prevalent throughout the ''RobotRomanceTrilogy''.
* The War Of The Best arc in OnePiece, which dealt with The Marines fighting [[WorldsStrongestMan Whitebeard]], plays this trope straight. Both sides start off fresh and eager for battle. Near the end, almost everyone is splattered with blood, marines and pirates alike lay dead, or injured on the ground, trampled by allies and enemies alike who don't care. Soldiers who try to desert get killed mid-battle by [[GeneralRipper Akainu]], and the people who decide to help their fallen comrades? Get shot as well, with a massive body count for both sides in the end. [[spoiler: Two major characters end up dying, including the protagonist's brother.]] Not to mention that the end result made everything -even worse- in the long run.
* Persistently present in ''Manga/AttackOnTitan'', especially in scenes before and after various battles where soldiers are seen to break down in terror or struggle to not flee.
* The Aincrad Arc of ''LightNovel/SwordArtOnline''. It all started the day the game launched, when the players were stunned to find themselves trapped in the game, and dying in the game means dying for real. In the ensuing arc, most episodes have characters die in the episode, and most of the ones that don't involve murder investigations. Some of the players snapped and committed suicide; others grew so nihilistic that they committed murder for sport. Back home, nobody other than the veterans wants to remember that the war even happened.
* One of the main themes of ''Anime/{{Flag}}''.
* ''Anime/{{Hellsing}}'', and The Major [[NightmareFetishist would not want it]] [[WarIsGlorious any other way]].
* The trainee pilots in ''LightNovel/ToaruHikuushiENoKoiuta'' are at first eager to engage in the Sky Clan, even if it's only doing recon. However, RealityEnsues very quickly for them, and a few of them [[AnyoneCanDie are killed off]], and others injured after their first skirmish with their battle-hardened enemy. By the time they're ordered to go into battle again, none of the ones that go do so willingly, and are only going to prevent their loved ones from having to.
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