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
Pot-au-feu serving. Traditionally, the broth is served first with a bit of nutmeg and the marrow (if a marrowbone was used) spread on toasted bread. Then the meat and the vegetables are served with coarse salt and strong Dijon mustard, horseradish sauce, and sometimes also with gherkins pickled in vinegar. "Pot-au-feu" broth may also be used as a soup (often enriched with rice, pasta or toasted bread), as a base for sauces, or for cooking vegetables or pasta. Ready-to-use concentrated cubes are available to make what purports to be "pot-au-feu" broth when water is added. Many countries have similar dishes with