Chemical Corps affiliation with the corps. The Chemical Corps branch insignia consists of a cobalt blue, enamel benzene ring superimposed over two crossed gold retorts. The branch insignia, which was adopted in 1918 by the fledgling Chemical Service, measures .5 inches in height by 1.81 inches in width. Crossed shells with a dragon head was also commonly used in France for the Chemical service. The Chemical Warfare Service approved the insignia in 1921 and in 1924 the ring adopted the cobalt blue enamel. When the Chemical Warfare Service changed designations to the Chemical Corps in 1946 the symbol was retained. The regimental
Au (Munich) along with Au, forms the Au-Haidhausen borough of the city. Au was first documented on 12 December 1340 as "Awe ze Gysingen", with "Awe" meaning "Land on water". In 1808 Au was made a town as "Vorstadt Au" ("Suburb of Au"). In 1818, along with Untergiesing (what the settlement at Nockherberg had been referred to as), Au formed its own urban municipality. On 1 October 1854 the district was incorporated into Munich. Hans-Georg Schwarzenbeck, a 1974 World Cup champion has operated a stationery shop in Au for over 20 years. After the municipality had been made part of the city