Following the
American entry into World War I in April 1917, Malone was promoted to the temporary rank of lieutenant colonel on June 26, 1917, and embarked for
France. He was attached to the General Headquarters,
American Expeditionary Forces (AEF) under General
John J. Pershing and assumed duty as Assistant Chief of Staff for Plans and Training (G-5) with the headquarters at
Chaumont. Shortly thereafter, Malone was promoted to the temporary rank of colonel and ordered to the front in February 1918. While in this capacity, he was responsible for implementing the general staff training plan of all AEF forces. Malone then led the 23rd Infantry in the
Battle of Soissons and particularly distinguished himself on July 19. During the two days which his regiment was engaged with the enemy, Malone frequently visited the advanced troops. On the evening of July 18, after the regiment had suffered severe losses, he assisted in the reorganization of a battalion for the attack on
Vierzy. On the morning of July 19 he made a personal reconnaissance of the front lines, under heavy fire, in order to ascertain the enemy position, which was of vital importance. Malone then directed his regiment in attack and defeated the
German forces. For his service during the Soissons operation, Malone was decorated with the
Distinguished Service Cross (DSC), the second highest decoration of the
United States Armed Forces. ==Later career==