 The regiment fought as part of the "Big Red One" and participated in the Lorraine and Meuse-Argonne campaigns and was awarded the French Fourragère and two awards of the Croix de guerre for valorous service.Sergeant Wilbur E. Colyer of Company A received the Medal of Honor for advancing under fire and destroying a series of enemy machine gun positions near Verdun, France in 1918.In May 1922, the 1st Engineer Regiment arrived at Fort DuPont in Delaware City, Delaware, and garrisoned the army post until 1941.