Marines of the 4th Brigade sffered their first gas attack on the night and early orning hours of 12-13 April when the Germans bombarded the 74th Company, 6h Mnes near Verdun with mstard gas. Nine Marine officers and 305 enlisted Marines were gassed and evacuated, and 30 Marines died from the effects of the gas shells which hit in the middle of reserve area cantonments in which they weresleeping.