The story takes place in a fictionalized version of 19th century Europe in which one of its countries, Weissen, stands as one of the strongest regional military powers on the continent.

Major Bernd Baltzar is a young and ambitious rising star in the Weissen military, until he suddenly receives new orders that he is to be sent to the previously neutral country of Baselland as an advisor and instructor for the nation's military academy.

However, Baltzar finds his work cut out for him when he sees the poor state of Baselland's military, which uses both obsolete tactics and weaponry.

Written and illustrated by Michitsune Nakajima, Gunka no Baltzar was serialized in Shinchosha's seinen manga magazine Monthly Comic Bunch from January 21, 2011 to August 19, 2021.

[29] The series was ranked tenth in the Nationwide Bookstore Employees' Recommended Comics of 2013.