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 pair well as an insurance for potential repatriation costs for the au pair. In Belgium, an au pair is entitled to at least 450 euros pocket money per month, deposited to her bank account. The au pair is entitled to the full amount of monthly pocket money in cases of illness and during holidays. Au pairs are not allowed to work more than 4 hours a day (babysitting hours included) and 20 hours per week, spread out over a maximum of 6 days a week. Au pair are entitled to at least one day off per week and at least one