Here are the units that compiled the Rainbow Division and a link to some of the maps. delilah http://freepages.military.rootsweb.com/~worldwarone/WWI/Maps/index.html#Cantonments Forty-second, 42nd Division ( National Guard) Source No. 2: 42nd Division - Most of the Middle and far Western States. Trained at Camp Mills in Garden City, Long Island, N. Y. Nickname: Rainbow Division 165th, 166th, 167th, 168th Infantry (Inf.) 149th, 150th, 151st Artillery (Art.) 149th, 150th, 151st Machine Gun (M. G.) 117th Engineers (Eng.) Major Generals Commanding: W. A. Mann, C. T. Menoher, C. D. Rhodes, C. A. F. Flagler. Engaged: Red Cross Farm, St. Mihiel, Argonne, Rhine. Shoulder/Sleeve Insignia: