Erich von Rerugen

Erich von Rerugen a.k.a. Lehrgen is a talented military officer who serves under the Imperial General Staff.

Appearance
In the light novel, he has short, brown, center part hair and blue eyes. He has a quite fit body shape, and the airs of a noble.

In the anime, he has black hair with a long strand of hair that set aside his face. He has a gentle, cool-headed looking face and wears bottom rimmed eyeglasses. He wears his officer attire in casual places and during conference meetings.

Personality
He is knowledgeable, diligent, and thoughtful on his duties. He has extraordinary observations of various departments during the War College conference and received high evaluations even in the General Staff. Hence, he was able to see through Tanya's true nature and thought of her as a monster.

Plot
He debuted as the merit investigation branch head of manpower department. Later, he was promoted from Major to Lieutenant Colonel due to his excellent performance, and was assigned as the executive officer for the Operation department of General Staff, and went to the north front as the inspection. On the train went to the north, he read Zettour's thesis about the World War. He went to many battlefields to carry out the missions General Staff Office gave. In vol.1 ch.5, he attended the parade of the 203rd Aerial Mage Battalion as one of the inspecting officers, and took part in the Dacian War.

In vol.2 ch.4, he had a short meeting with Tanya, and suggested her battalion assist an exercise of North Sea Fleet.

Trivia

 * According to LN Volume 7, Lehrgen Combat Group was picked up by the future historian during 1976 Common Era.
 * His name has various versions from different media. Check Terminologies.