The Saga of Tanya the Evil (manga) Series by Carlo Zen, Chika Tojo, カルロ・ゼン, Shinobu Shinotsuki

What would an ultra-rational Japanese salaryman do if he was reborn as a girl in a world where magic was real? Obviously, become the Empire's most feared magic soldier, while climbing the army career ladder at the ripe old age of nine. The only things standing in Tanya Degurechaff's way are a world war and maybe a supernatural being or two. But Tanya isn't about to let artillery shells or deadly spells stop her when a cushy desk job is calling!

After being reborn, Tanya has earned the right to be called an Ace and is steadily climbing the ranks. But as much as she wishes to be placed in the safety of the rear, for some reason she keeps winding up at the very edge of the front lines! While swearing revenge on Being X, Tanya's days of brutal combat alongside her beautiful subordinate, Visha, have begun...

At last, the long-awaited days of tranquility are here! Tanya begins attending war college, where she spends her time feasting in leisure. But who would've thought that a conversation with General von Zettour would lead to another turn of events...! Will her days of delicious bread and clean bed sheets come to an end?

Tanya's plan has backfired! Despite her off-putting call for recruits, young people from all over have volunteered for her new battalion!

As hinted at by Colonel Lergen's "thoughtful" words of advice, an attack on Dacia has been ordered by the Empire, and the fearsome power of the new mage battalion is deployed. Determined to unleash the power of modernity upon the enemy, Tanya prepares her freshly polished human shields for an all-out battle...There's no holding back with a resume-worthy achievement on the line...!!

Extoled for her achievements in Dacia, Tanya is sent back to the frontlines for another...debut?! As warm memories in the rear fade into the distance, relations with the once amicable Colonel Lergen and her subordinates go sour. From a barrage of shells to communication errors, the war to sabotage the former salaryman just never seems to end!

With undeniable wit and charisma, Tanya manages to charm her way into the warmth of the office...not. When an order for a military march launches the dumbfounded Degurechaff into the freezing depths of winter, fluffy pillows and five course meals are the last thing on her mind...That is, until the Major discovers another tempting course of action...

Finally, the Osfjord clash between Major Tanya Degurechaff and Colonel Anson Sue reaches its climax! Who will emerge victorious?! As the former salaryman prepares to launch her decisive attack, an old enemy makes a shocking appearance on the battlefield...And that enemy is none other than...Being X?!

Only a step away from their demise, the Regadonia Entente Alliance desperately push for a government-in-exile. Meanwhile, the notorious "Rusted Silver" Tanya von Degurechaff faces off against Colonel Anson Sue in another fatal battle that threatens to change the course of the entire war...and her chances of promotion!

Exhausted and drained, the 203rd Aerial Mage Battalion prepares to head home- until an encounter with a suspicious vessel from the Albion Commonwealth piques the little major's interest. Could this finally be Tanya's one-way ticket to the rear?!

After a successful exercise with the Norther Sea Fleet, Tanya leads her battalion to the nostalgic, blood-soaked skies of the Rhine front lines for another mission...Only this time, the mission includes babysitting new recruits?!

After gaining a reputation as an excellent instructor from her exercises with theNorthern Sea Fleet, Tanya gets saddled with the task of managing a huge batch of newbieson the Rhine lines alongside the 203rd. These green soldiers, lacking in both training and experience, need to be pruned down somehow-and what better place to do that than the most hellish battlefield this world has ever seen...?

When the Republican Army, led by Lieutenant Colonel Vianto, attacks the imperial supply base of Arene, the Empire’s top brass orders the 203rd to carry out an operation that Tanya herself proposed back in war college—the “Devil’s Protocol.” But what exactly are the fearsome contents of this ominously named plan...?

No one but “enemy combatants” in need of extermination remain in the city of Arene, and the members of the 203rd are finally forced to carry out their merciless orders. As the “Devil’s Protocol” comes to its fruition, resulting in mountains of corpses and a battlefield that does indeed resemble Hell itself, what path will Lieutenant Grantz, tormented by his conscience, choose to take...?

After surviving the hellish urban warfare in Arene, the members of the 203rd Battalion are ordered to move on to their next assignment-in the rear! But the Republican Army is waiting for them there and now has a bone to pick with the hated Devil of the Rhine. The Republicans put up quite the fight in Arene, and the threat they pose now is greater than ever before...

After somehow managing to live through the most grueling battle of their entire careers, Tanya and the 203rd receive a letter from the General Staff. Its contents are, essentially, “Hop on these rockets and go smash up the Republican Army’s HQ. Oh, and be sure to come back from this technologically unprecedented flight alive once you’re done with your absurdly dangerous mission!”

The 203rd Battlion's manned V-1 rocket assault, a mission that will determine the fate of the Empire, has thrown the Francois Republic’s headquarters into chaos. Yet is even this unprecedented, unforeseeable strike only meant to open the curtain on Zettour's devilishly brilliant strategy?!