Friedensbund der Kriegsteilnehmer
The Friedensbund der Kriegsteilnehmer (commonly translated as "Association of War Veterans for Peace") was a nonparty, pacifist, and anti-military organisation in the Weimar Republic. It was instituted by former soldiers who had fought in World War I and existed from 1919 to 1927.
Source: Wikipedia — Friedensbund der Kriegsteilnehmer (CC BY-SA 4.0)