This is a {{Crossover}} written by committee. It can be found on Spacebattles and Fanfiction.net.

It describes a war between the [[Series/BabylonFive Minbari Federation]] and the [[Franchise/StarTrek United Federation of Planets]]. In the beginning, a ship from the Earth of Babylon 5 and a Minbari ship chasing it go through a space anomaly. Captain Kirk's ''Enterprise'' finds them before the assassination of Chancellor Gorkon in what would have been ''The Undiscovered Country,'' leading to the Federation and Klingons discovering a hyperspace channel to the home of the Earth Alliance... and bringing down the wraith of the Minbari. The consequences extend into the next century, and the Vorlons get involved as well -- also as enemies of the Federation.

It can be found [[http://www.fanfiction.net/s/1944628/1/A_Thin_Veneer here]].
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!!Tropes:
* AbusivePrecursors: Vorlons march up one side of this trope and down the other. If it wasn't for helpful precursors on the Federation's side, this would be a much darker, and much more terrifying fanfic.
** The Shadows also have a bit of this, as part of their backstory. However, as their style is more "Infiltrate and learn," rather than "appear as gods," they more quickly learn about the Federation and its benefits, and leave not that long after they're introduced.
* AlienArtsAreAppreciated: Averted... but justified ''why'' it's inverted. It's rather hard to appreciate alien arts when they're being used as part of a plan to turn ''the entire hull of your ship into a sonic weapon.'' And even barring that, it's mentioned that part of the selection of songs includes Klingon Opera and Bagpipe music... being played at the same time.
** Played straight in other areas. The Federation Ambassador to the Narn likes their food, and the Vree "Master of Sleep" has several sets of sheets for everyone's beds... which all have cartoon dinosaurs on them.
** Dellenn's parents muse briefly on a Centauri that decided to renounce his citizenship to live among the Minbari because he grew infatuated with their culture.
* AlternateUniverse: An alternate universe [[Series/StarTrekVoyager Admiral Janeway]] [[NinjaPirateZombieRobot from the future]], ''Voyager,'' and a Minbari warship travel to the ATV universe to deliver a warning about the Vorlons and provide weapons and technology from over one hundred years in the future. This scares Kirk, as Starfleet has strict rules against this sort of thing, and if Janeway is willing to break them, things must be ''very'' serious.
** In another sense, the story breaks off from the "Original" timeline during the sixth Star Trek movie, "The Undiscovered Country." Instead of the mission being [[spoiler: sabotaged by combined Federation and Klingon forces]], the mission is interrupted by the appearance of Earth Alliance ships fleeing from Minbari warships. As such, Chancellor Gorkon and his crew survive and play a key role in the war.
* ArcWords: Destroying an empire to win a war is no victory. And ending a battle to save an empire is no defeat.
** The title, "A Thin Veneer," also shows up several times, asking the question of exactly how "Civilized" each group in the war is. Are the Minbari, with their CrystalSpiresAndTogas technology, who have launched a genocidal war, civilized? Are the Federation, who for all their good points, still show signs of righteous rage towards old foes and the Minbari? Are the agressive Klingons? Are the Gorn?
* BreadEggsMilkSquick: The Gorn's warships. While the first four ships listed are almost certainly an attempt to tease the Federation, being named ''Smaug'', ''Fafnir'', ''Mothra'', and ''Rodan'', the last is registered as [[spoiler: the GCF [[RememberTheAlamo ''Fires Of Regulus'']].]]
* CrossOver: Between Babylon 5 and Star Trek. While the main focus is on TOS-era Star Trek (in the Movies, sometime during the time period of Star Trek VI), mentions are made of ''Enterprise'' and the animated series, while several viewpoint segments are made from the perspective of ''The Next Generation'' and ''Deep Space Nine'' crew.
** At one point, characters from the author's other series, "Universe of Change," briefly communicate with the Federation of that day.
* CurbStompBattle: Well, just about every single time the allies go against the Minbari, and even sometimes the Vorlons. The B5 powers are just that outmatched in terms of speed, firepower, durability (at least while the shields are up), and actual combat experience. It's hard not to feel sorry for the Minbari.
** As time goes on, Minbari start to get upgrades from the Vorlons, which make battles much harder for the Federation, and the Minbari do learn from mistakes. So do their much stronger cousin, the Aschen... to the point where the longer the story goes, the fewer and farther between the curbstomps come.
** However, even the Ashen can't change things for much longer since they were also being completely outclassed.
* EnemyCivilWar: [[spoiler: between the Aschen and the Minbari, as of chapter 79.]]
* [[EvenEvilHasStandards Even]] [[SufficientlyAdvancedAliens First Ones]] [[EvenEvilHasStandards Have Standards]]: None of the other "elder races," or "first ones," such as the Metrons, Medusans, Organians, or even Q like the Vorlons. The Shadows don't like them either, but they have a [[Series/BabylonFive history]] to back it up.
* EverythingsBetterWithDinosaurs: The Federation classifies Gorn ships by Dinosaur name. The flagship of the Gorn group that arrives at ''Beccara Alpha One'' is a TyrannosaurusRex class dreadnought.
** Interestingly, the whole thing started as a joke- some "Wise Guy," at Starfleet Headquarters started labeling Gorn ship classes after Dinosaurs. When the Gorn found out, and found out the reverence that humans placed on "The large collections of bones in those old museums," they found it hilarious, but also took great pride in it. Now, they're almost certainly naming their ship classes to screw with Starfleet Intelligence.
* ExternalRetCon -- the Vorlons led the Dominion into the Dominion War. The Vorlons and the Dominion are for Order, and the Federation and its allies are sheer chaos just a wormhole away.
** Humorously, Tomalak, a Romulan officer who played a semi-major role in ''The Next Generation'', is shown to be the son of the Romulan Ambassador from ''Star Trek V.'' Made especially funny because (adult) Tomalak is played by the same actor as G'Kar.
** Also, the Vree's "Dimensional Slip" technology came from reverse-engineered tech from an abandoned Iconian outpost.
* ForegoneConclusion: The events of this story are interspersed with occasional looks into the future of the ATV-verse, including [[Series/StarTrekDeepSpaceNine Sisko]] and [[Series/StarTrekTheNextGeneration Picard.]] The war ends with the remnants of the Minbari Republic signing an agreement with the Federation/Klingon alliance, followed by close to a century of cold war with the Vorlons, who eventually lead the Dominion to war with the Federation and help along the Ciona Imperix in their attempt to dominate the Alpha Quadrant races in the name of order. Meanwhile, the Narn Regime and the Centauri Republics join the United Federation of Planets.
* {{Foreshadowing}}: Alternate Universe Admiral Janeway from the Future warns of four separate threats: The Vorlons, "A race of cyborgs," "Aliens from another universe," and "A hostile government in the Gamma Quadrant." While Kirk and the others of the time ponder over who these enemies could possibly be, hindsight tells the audience that she's referring to (respectively) The Borg, either Species 8472 (AKA The Undine) or the Thirdspace Aliens, and the Dominion.
* FusionFic
* HowUnscientific -- when the ship from Babylon 5's Earth realizes for the first time that the new ship has warp drive -- which is strictly forbidden by Babylon 5 physics, but which is the only way to explain the sensor readings.
* HumanityIsInfectious: The fic continues the ''Babylon 5'' tradition of making humans community builders, and the prologue reveals that the Narn and the Centauri have joined the Federation in the future.
** Someone at Starfleet decided to classify Gorn ships with dinosaur names. When the Gorn find out, the Gorn ambassador thinks that this is an honor, and their battleship program is rumored to be called ''Franchise/{{Godzilla}}''! Four of their ships that come to the Earth Alliance's side of the galaxy are named after dragons or monsters: ''Mothra,'' ''Rodan,'' ''Fafner,'' and ''Smaug.'' [[spoiler: Except, of course, for the ''GCF Fires Of Regulus.'']]
* IDoNotOwn -- and neither does anyone else. Explicit permission is given for anyone to copy this story as long as they leave the credits. The credits mention many works, including all vs. of canonical Franchise/StarTrek extant at the time.
* TheManBehindTheMan: The Vorlons are this to the Minbari and the Aschen.
** They also pushed the Dominion into going to war with the Federation, and encouraged another race to try and take over the Federaton.
* MoralMyopia: The Minbari attitude toward their defeats.
** Later, the Minbari are shown up at this by the Aschen.
* MythologyGag: Sheridan, when he first appears, is surprised that he doesn't feel disgust at the idea of half-human hybrids in the Federation, or at humans mating with aliens. In the canon ''Babylon 5'' story, he eventually married and had children with Delenn, a Minbari.
** The Gorn call Kirk "Bamboo Warrior," for how he constructed a cannon with nothing but available materials and bamboo.
** An admiral is commenting to Kirk how "The Cardassians are a war waiting to happen," while Kirk brushes him off. The Cardassians were minor antagonists through later seasons of ''Series/StarTrekTheNextGeneration'', and major ones (active participants in the Dominion War) in ''Series/StarTrekDeepSpaceNine''.
** One of the criticisms that an EA professor levies against the Federation is nearly word-for-word a scathing condemnation delivered by Michael Eddington in Deep Space Nine.
** One of the Narn dishes presented to the Federation ambassador is identical to Swedish Meatballs, which was a minor joke in Babylon 5: Every species, no matter what, comes up with a food that is identical to Swedish Meatballs.
* NormalFishInATinyPond: Many Federation technologies are considered normal, even weak for the setting, but are very effective against the Minbari simply because ''they have had no exposure to these technologies.''
** Of particular note are tricobolt explosives. While they've been largely phased out in the Federation due to the prevalence of more effective antimatter explosives and their ineffectiveness against shields, the tricobolt devices have the unique benefit of ''royally'' screwing up Minbari gravity drives (the fact that they have no shields also helps a lot).
* PoorCommunicationKills: Aside from the backstory, where thanks to this, the Earth/Minbari war started, a lot of problems could have been avoided if the Minbari had sat down with the Federation and the Klingons and simply talked to them. As it stands, they offended the Klingons and assume that the Federation is a strange, mongrel power under the control of the Shadows and the Vulcans, seeking to bring all races under their control.
* ShoutOut: The Gorn battleship program is rumored to be called ''Franchise/{{Godzilla}}.'' The names of two of the ships in the mini-fleet they bring include ''Mothra'' and ''Rodan,'' more Godzilla monsters.
** Another ship is the ''Smaug'', named after the dragon from ''Literature/TheHobbit.''
** When Kirk is going over some of the officers participating in the war, he mentions that he used to work on a ship with [[{{Airplane}} Ted Stryker and Buck Murdock]], and even mentions Stryker's [[VisualPun Drinking]] [[ExactlyWhatItSaysOnTheTin Problem.]]
** At one point, Acaltha mentions that the Klingons are as bad about leaping before they look as the [[KnownSpace Kzinti]] (although this is only a semi-example, since the Kzinti are more-or-less canon as existing in the Star Trek universe already).
** Commodore Acaltha's trap in the Berlin system includes an ElectronicWarfare attack the Minbari garrison force, complete with suddenly-blacked-out-then-returned computer displays being overrun with [[Film/IndependenceDay laughing]] [[HackedByAPirate skull-and-crossbones]].
* StealthPun: There's a presidential aide for the Earth Alliance whose name is "Hastur." His name is only mentioned three times.
* TheOnlyOneAllowedToKillYou: Once again, Kirk is in fine form in this story. Not in the sense that he wants to be the one to defeat the Minbari, but in the sense that yet ''another'' group of aliens wants him dead, and demands that ''they'' be the ones to tear of his head. Bonus points for the Klingons still being upset about the peace treaty because it means they won't get to fight "The Great Enemy."
* TitleDrop: As Kirk tries to convince Delenn to stop the war.
--> "We're only, at best, half civilized. This thin veneer of civilization we share is the only imaginary line that keeps us from acting out our own darkest impulses. It allows our 'humanity' to resist justifying butchery. You call yourselves civilized, but you're tottering on the brink mindless savagery just to satisfy your egos. Yes, we are aware of what is happening right now at Earth. Right now, your people are desperately trying to force your way to Earth. To do what? Kill in the name God-in this case a memory of a leader you revered. But, instead of asking that a world be sacrificed, you can exercise your civilized ideals and say 'stop'."
* TyrannosaurusRex: The Federation has labeled a Gorn dreadnought design as the ''Tyrannosaurus Rex''-class ship. The Gorn love it.
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