To give oneself over to the desire for victory, as all must do in war, is a sickness unto death. General Romel’s heroic exploits resulted in the replenishment of the Imperial Southern Continent Expeditionary Army Corps. Yet the Empire, intoxicated by its wins in the south, has neglected the growing ambitions of the Reds in the east, and it cannot feel the hateful stares of the world. But even with the whole world against her, Major Tanya von Degurechaff will march into hell if she must...

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...?

Finally, the Osfjord clash between Major Tanya von Degurechaff and Colonel Anson Sue of the Regadonia Entente Alliance reaches its climax! Who will emerge victorious in this fierce showdown between two world powers?! With the fate of the entire aerial mage battalion and the Imperial fleet resting on her tiny shoulders, failure is not an option for this vertically-challenged major—certainly not when her reputation’s on the line!!

When the average Japanese salaryman is suddenly thrown into in a world wracked with warfare and hardship by a supernatural power, they might first think to hide or run away. But not Tanya Degurechaff. A calculating and utilitarian man has been reborn as a child soldier. This young girl will do anything to rise in rank and find a way to live a life of comfort, and woe to any king, country, or god who stands in her way.

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?

The Imperial Southern Continent Expeditionary Army Corps struggles under the reality of the shortage of manpower and supplies. The Imperial army’s weak spot has been exposed, and an experienced commander like de Lugo is quick to take advantage and pin them down. Driven into a corner, will Romel and Tanya be able to turn the desperate situation around!?

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...!!