Friedrichshafen lies in the Bodenseekreis district, on Lake Constance in the extreme south of Germany, and at the time it was at the edge of the German nightfighter defences. Targets included the Dornier Flugzeugwerke aircraft works at Manzell, the Maybach tank engine factory, the Luftschiffbau Zeppelin aircraft works and its Oberraderach test facility near Raderach, and the Zahnradfabrik Friedrichshafen (Literally "gearwheel factory Friedrichshafen") tank gearbox factory.