In 1897 and 1898, Bruchmüller served as a battery commander in "Fußartillerie-Regiment Nr". 3 in the Fortress of Mainz. Next, he commanded a battery in the "Lehr-Bataillon" (Demonstration Battalion) of the "Royal Prussian Fußartillerie-Schießschule" (Foot Artillery Firing School) in Jüterbog from 1901–1902. During this time, he worked with one of the instructors at the "Fußartillerie-Schießschule", Hauptmann Arthur Bilse, a heavy artillery specialist. (Bilse, when "General der Fußartillerie" 15, was killed in action on New Year's Day 1916, at Les Baraques France.) In 1908, Bruchmüller was promoted to major and assigned to write the tactical manual for foot artillery.