After training at Parris Island, SC, and earning the designation of Sharpshooter, Harve became a Private in the 80th Company, 6th Regiment, Second Marines. He fought in France in the battles of Belleau Wood, Château-Thierry and was wounded for the second time on July 19, 1918 in the battle of Soissons. Here, his left hip was shattered by shrapnel. After lying on the battle field for nearly 18 hours, he was rescued and spent two months recovering at Base Hospital 27 in Angers, France, before returning to a hospital in Portsmouth, Virginia. His entire division was decorated for bravery by the French government.