He was then promoted to
Oberleutnant and transferred to command
Jagdstaffel 2 on 20 February 1918 at Marcke, France. This was the squadron that
Oswald Boelcke had commanded as he invented the first fighter tactics, strategy, and organization. It was being re-equipped with
Fokker Dr.I triplanes as it was being incorporated into
Jagdgeschwader 3. It was a dispirited squadron, having lost three consecutive
Pour le Mérite holding commanding officers killed in action. Bolle was destined to be the final commander of
Jagdstaffel 2. along with a yellow fuselage band edged by black and white to honor his old cavalry regiment. Bolle's command of English turned out to be handy upon occasion, when he questioned downed British Empire fliers. These were Bolle's final victories. A week later, he and his pilots defiantly marked their
Fokker D.VIIs with their names and victory scores before surrendering them into British hands at
Nivelles, Belgium. Bolle's final score of 36 victories included a preponderance of wins over enemy fighters; he downed 25. The other 11 victories were two-seater reconnaissance, ground attack, and bomber aircraft. More importantly, he led
Jagdstaffel 2 through the intense battles of 1918 to the second highest victory total in the German Air Force, with a total of 336 victories to the Jasta. ==Post World War I==