He was deployed to France in 1918 and fought in all the engagements in which the 5th Marines participated, from Belleau Wood to the Meuse River Crossing. Along the way he earned a commission as a second lieutenant, as well as the Medal of Honor and four Silver Star citations. From the French, there was the Légion d'honneur, the Médaille militaire (the first award of this prestigious decoration to a Marine officer) and the Croix de guerre 1914–18 with two palms and one silver star. Italy decorated him with the Croce al Merito di Guerra, while Yugoslavia weighed in with the Commander's Cross of the Royal Order of the Crown of Yugoslavia.