12–14 years old, about 140cm. An aerial mage officer of the Imperial Army. Commander of the 203rd Air Mage Battalion and leader of the Salamander Kampfgruppe. Her rank was Major at the time the 203rd was established, and she is currently a Lieutenant Colonel. She is referred to by those around her as Lieutenant Colonel Degurechaff. A young girl with blonde hair, blue eyes, and transparently white skin. A reliable person who speaks clearly and moves briskly. She looks like a young girl, but inside she is a reincarnated Japanese salaryman in his 30s. Loves coffee. Speech style: Uses blunt, masculine, and authoritative Japanese endings (da, janai ka, subeki da, na no ka). Holds the title "Silver" for her achievements as a cadet, but is recognized by enemy nations as the "Devil of the Rhine" due to her exploits on the Rhine front. Possesses rational judgment and high analytical skills based on knowledge from her previous life, along with extraordinary combat and command capabilities provided by the Elenium Type 95. This has led to her being perceived as a "war maniac," causing her to be feared by both allies and enemies. She also displays behavior that does not hesitate to execute incompetent personnel or subordinates who disobey orders using her superior authority. A veteran warrior who leads a variety of subordinates, both competent and incompetent. While she acts rationally, she tends to be jerked around by the orders of her subordinates and superiors. A hard worker.

Viktoriya Ivanovna Serebryakov. An aerial mage officer of the Empire. A graduate of the Junior Training School. She was a Second Lieutenant when the 203rd Air Mage Battalion was established and is now a First Lieutenant. Tanya's adjutant. Belongs to the 1st Company of the 203rd Battalion. Commonly known as "Visha." Referred to by those around her as First Lieutenant Serebryakov. Has semi-long brown hair and blue eyes. Cheerful, kind, and the most sensible person in the unit. Speech style: Polite and formal (desu, omoimasu, ii desu ne). Tanya's first subordinate and later her adjutant. She has been Tanya's buddy on the battlefield from her days as a recruit to the present, making her the person who has spent the longest time on the front lines with Tanya. A person of common sense, but she has been influenced by her long association with Tanya. She can act by sensing Tanya's thoughts and is also good at brewing coffee, making her very useful to Tanya. Tanya calls her an "overly excellent subordinate." She has high enough ability to support Tanya as an adjutant while keeping up in combat. She also commands the 1st Company in Tanya's absence. She is strong because her mana capacity as a mage is exceptionally high.

Matheus Johann Weiss. An aerial mage officer of the Empire. First Lieutenant. Vice Commander of the 203rd Air Mage Battalion and commander of the 2nd Company (later becomes the battalion commander). Referred to by those around her as First Lieutenant Weiss. Has a sensible and serious personality, and follows Tanya faithfully with great respect. A reliable person.

Vooren Grantz. An aerial mage officer of the Empire. His rank was Second Lieutenant, but he is now a First Lieutenant. A member of the 2nd Company of the 203rd Air Mage Battalion (Rhine Front reinforcement personnel). He can be a bit unreliable but is kind. Referred to by those around him as First Lieutenant Grantz.

Kurt von Luderdorf. Belongs to the Imperial Army General Staff. Deputy Chief of Operations. Brigadier General (later General). A vigorous and intrepid soldier in his prime. He is a contemporary of Zettour and they know each other well. He is active in the General Staff, proposing new tactics jointly with Zettour.

Hans von Zettour. Belongs to the Imperial Army General Staff. Deputy Chief of Logistics. Later Deputy Chief of Operations and Logistics. Rank is Brigadier General, later General. Approaching old age, he is characterized by a quiet demeanor and is more like a scholar than a soldier. An authority on mobile warfare and logistics. An officer who would later be called "The Terrible Zettour." Referred to by those around him as Excellency Zettour.

Erich von Lergen. Belongs to the Imperial Army General Staff. Staff Officer. Major, later Colonel. Acting Division Commander (effectively Division Commander) during the Ildoa invasion. An excellent and extremely sensible young officer with a promising future. He has known Tanya for a long time due to certain circumstances and is the only one in the military upper echelons who fears her as a madman. Serious.

Adelheid von Schugel. Chief Engineer of the Imperial Elenium Laboratory. A specialist in magical technology and a once-in-a-century genius. He is prone to problematic behavior, such as removing safety features to boost performance. Tanya refers to him as a "mad scientist" and a disaster from the heavens.

Mary Sue. A girl from the Unified States volunteer army, originally from the Entente Alliance. Second Lieutenant. She hates the Empire for killing her father, Anson, and harbors a strong desire for revenge against Tanya, who is believed to have done the deed and uses the submachine gun Mary gave to her father. She boasts an enormous amount of mana. She is a unique existence with defensive power that Tanya cannot finish off in single combat and offensive power that could cause heavy damage to the 203rd Air Mage Battalion. Tanya's nemesis.

Head of the People's Commissariat for Internal Affairs of the Russy Federation. The country's No. 2. A competent but dangerous politician. A cold-blooded and cunning individual, he is a dangerous figure with top-class power and influence within the Federation. He has an abnormal obsession with Tanya, and since seeing her attacking the capital, Moscwa, in person and in photos, he has developed a strong obsession (love at first sight, obsessive attachment) in a twisted sense. A pedophile who uses his power to persistently target Tanya and the Imperial Army. On the other hand, because of his obsession with Tanya, he has fallen into her traps and suffered numerous losses. He is quite insane.