Saga of Tanya the Evil

"Degurechaff's frustration is directed against "World War". She is presupposing and angry with the projection of the future where the Empire fights the world… Oh God… Is this what you will?"

Saga of Tanya the Evil began as a web novel and now has light novel, manga, and anime adaptations (although some adaptations are probably based on other adaptations instead of the web novel). In Japan it's called “Yōjo Senki”, which translates to "The Military Chronicles of a Little Girl". The light novel is written by Carlo Zen and illustrated by Shinobu Shinotsuki. The anime is dubbed by FUNimation. Subtitled is available on Crunchyroll.

God is annoyed an atheist japanese salary man refuses to admit “Being X's” divinity. So, how do you make an atheist faithful? With a (proverbial) fox hole!... in a world with magic, going through it's first World War. A world war, by the way that has many obvious similarities with our first World War. Also as a little girl. Dues lo Vult!

"My wing is a fully-armed well-drilled army . See how I shatter them."
 * A Date with Rosie Palms: Lieutenant Weiss tells the 203rd they are being deployed and if they were planning on a one night stand, they'd have to make due with their right hand.
 * Badass Boast: Eager to put some easy experience into his new unit against an enemy antiquated army, Tanya seeks the approval from von Rerugen thusly:

"It’s hard to say if things would go this smoothly even in a drill."
 * Baleful Polymorph: Being X reincarnated Tanya as a baby girl that would still be a child when broke out. It's actually Zig Zagged, as Tanya's new body has basically unprecedented talent for Magic. Because of where Tanya grew up, this means Tanya is going to get drafted, even though he is now a girl, because not everyone can be a mage, let alone military grade mage. Also war is on the horizon. And Tanya has retained the gender identity he had in his previous life, which has on at least one occasion in the manga caused discomfort (although he is more often shown trying to exploit he has the body of a ~10 year old girl than being shown to be upset about his body's sex).
 * Curb Stomp Battle:
 * In the Light Novel, Tanya this thought about the Empire's interception of the Entente Alliance invasion:

"I know about that." They took that quote as not only a confirmation that the enemy (well, the UK is technically "neutral" with the Empire, but they UK and the Empire aren't on good terms) knew what they were up to, but left that message to taunt them if the UK managed to hack into the operation orb. "How did this happen? How did this all go so well?"
 * Tanya's wing vs the Dacian vanguard.
 * Deicide:Tanya isn’t fond of Being X, and aspires to kill him.
 * Even the Rats Won't Touch It: The manga tells us that birds won't eat K-Brot.
 * Exact Eavesdropping: Inverted in chapter 26 of the manga. The United Kingdom was confident that the Empire knew everything about their highly classified plan, based on the actions of the 203rd mage wing. During the operation in question United Kingdom hacked into Visha's Operation Orb. They stole an audio recording that was from part of an unimportant conversation.
 * Finger Gun: While riding his bike in the empire, some kids 'shoot' at White Silver (Tanya) using brooms. Tanya 'shoots' back using his hands. Considering there was no scheming thought bubbles about PR he could have just been nice purely for it's own sake.
 * Friend or Foe: In the manga (chapter 16) the 203rd used decoys to trick one enemy nation to fire upon troops they were allied with.
 * Gone Horribly Right: Tanya proposed the formation of a special military unit to impress the higher ups and get promoted. They decided to make that military unit, and put him in charge of it, of course. He wasn't actually high enough rank to lead such a unit when he proposed it, so he got promoted so he could lead it.
 * Got Volunteered:
 * Despite Tanya being the one that proposed the rapid response mage wing (while being a flight mage officer himself), and by extension was assumed by those around him to desire to be the one in charge of that wing, this trope was in play. Tanya was formerly offered multiple jobs in front of other people, but one of them, that was by the General Staff (Basically a group of officers in charge of the military) was handed to him almost like an after thought. The General Staff also has final say in which job Tanya got assigned, not Tanya. Tanya immediately concluded that the other offers were basically just for show and was actually right.
 * Inverted when Rerugen was told to tell Tanya that she is to do a training exercise with the Navy and then go to the Rhine. Rerugen told Tanya about the Rhine assignment, and then correctly assessed that Tanya would eagerly part take in the training exercise if offered. Rerugen then offered Tanya the assignment of being in the training exercise, instead of ordering Tanya like Rerugen was supposed to.
 * Hat Damage:
 * In chapter 16 of the manga, Viktoriya's helmet is destroyed.
 * On another occasion (in the manga) Tanya destroyed a subordinate's helmet as a means of intimidation.
 * Helmets Are Hardly Heroic: Averted in the Manga. Played straight in the Anime.
 * Hollywood Tactics: In the manga Tanya sometimes has his head out of the trenches for presumably more than a couple seconds (which you really shouldn't do ) and at times even leaves his body outside of it without apparent in-universe purpose. Admittedly mages do have defensive spells, so if those spells could handle a sniper attack, then this might not be a problem.
 * Indecipherable Lyrics: The some of the words shortly after "I know" in Jingo Jungle are partially incoherent.
 * Isekai: Reincarnation version. Lacks a lot of the cliches associated with the genre.
 * Magic Wand: Generally mages use guns that have spells in the bullets. More skilled mages can cast offensive spells using the gun like a magic wand. Even more skilled mages can forgo the gun entirely.
 * Masochist's Meal: Our army is secretly battling the common-wealth— a neutral country to see who has the worst food!!
 * The Mind Is a Plaything of the Body: Averted. Tanya still identifies as a man. Not that he tells anyone.
 * Out-of-Character Moment: After Tanya found out Dacia invaded the empire with a large yet anachronistic army, thereby giving him a chance to test his troops in real, yet harmless (on his end) combat, as well as boost his reputation by demolishing a vastly larger yet vastly weaker foe, he was so happy that he thanked god.
 * Insert Grenade Here: In episode 6, Tanya lands on a plane and tosses a stick grenade into the cockpit.
 * Instant Runes: Some spells involve this. Other spells seem to not involve runes at all.
 * Irony: One of things the Americans call the mysterious thing in the war (Tanya), ~40 years after the war, is "Being X".
 * Oddly Visible Eyebrows: In the anime at least.
 * Readings Are Off the Scale: The recording of Tanya had a mana level passing the maximum measurement.
 * Reassigned to Antarctica: In episode 1, Tanya assigns a couple of soldiers he wasn't happy with to garrison a cramped pillbox not right up on the front lines.
 * Springtime for Hitler: Tanya says he could train a wing (47 subordinates) of elite soldiers in a month, with the expectation that implementing the cruelest non-lethal Spartan Way would cause a bunch of drop outs that Tanya could use as scapegoats. In the anime, not only does Tanya succeed, but not a single trainee dropped out because they were so scared of him. Even before that, he made a recruitment poster that was supposed to deter mages, but make it so the (at least supposedly) out of touch leadership wouldn't realize the recruitment poster Tanya made was to blame. Tanya received a lot of applications.

"Tanya: Where should I stop? Rerugen: Wha... What? Tanya: If the enemy resistance is too weak we may overextend the supply line."
 * Super Prototype: Tanya's Elinium Type 95 Operation Orb is the first multi-core orb. It can't be mass produced and admittedly it's full use is only accessible to Tanya due too a curse by god (without said curse it would be hazardous enough that likely only a skilled mage would be able to use it without it immediately blowing up, and even then they'd only be able to partially use it). The model type 97 is based off it.
 * They Just Don't Get It: Despite Tanya's efforts, the other imperial soldiers and officers regard the invading Dacian army, which Tanya has been tasked too delay till reinforcements can arrive, as a disastrous situation.


 * Uriah Gambit:
 * War Is Hell: Occasionally war is portrayed as at least a bit on the hellish side of things. Like Victoria's first combat experience. Or a mook remembering his encounter with Tanya's wing.