On March 30 the regiment sailed for France, arriving at St. Nazaire on April 13. It was stationed in one of the rest camps outside the city, details doing stevedore work at Montoir until the 21st, when the regiment was ordered to the Givry-en-Argonne training area, where it was billeted at Condé-en-Barrois. Under French officers intensive instruction was given in the use of hand and rifle grenades, machine-guns and automatic rifles, trench construction and battle formations; and during this period the regiment was reorganized in accordance with the French table of organization and became an integral part of the 63rd Division of the French Army. Leaving Condé-en-Barrois on May 27, the 372nd proceeded to towns in the Meuse and Vosges Departments, there to await operation orders. These were received on June 6, the different battalions being assigned to the sub-sector Argonne (Meuse), which was placed under the command of Colonel Young. The First Battalion was located at La Noue and Les Islettes as reserve to the 63rd Division, the Second at Camp Kapp and Basse Chevrie, and the Third at Courtes Chousses. There were no large offensive operations in this sector, but patrols from both sides gave the regiment its first real opportunity to see modern warfare. On June 21 the 372nd was transferred from the 63rd to the 35th French Division, the latter having relieved the 63rd. On June 27 the commanding officer of the 35th Division ordered the 372nd to relieve the 123rd French R. I. in the Vauquois Sector (Meuse). This relief, which was made by the battalions going into the line separately, continued until July 3, when it was completed. On July 2 the regiment was again transferred, this time to the 157th “Red Hand” Division. It was immediately ordered to occupy new positions in support, and from July 11 to 14 it relieved the 49th French R. I. in sub-sector Courcelles. The First Battalion on the night of the 11th moved to Bois de Fenchères, the Second and supply company on the following night to Camp Demougin at Brabant, and the Third and headquarters company to Lochères. On July 4, 1918, Colonel Herschel Tupes relieved Colonel Young in the command of the regiment.