In April, 1917, Read (now a
colonel) was appointed to head recruiting as the army began to mobilize for World War I. In August he was selected to command the
152nd Depot Brigade at
Camp Upton,
New York. The 15th Cavalry Division was disbanded in favor of fielding all infantry divisions, and in April, 1918 Read took command of the
30th Infantry Division, which he led to
France. In June he was selected by General
John J. Pershing,
Commander-in-Chief (C-in-C) of the
American Expeditionary Forces (AEF) on the
Western Front, to command the
II Corps, consisting of five divisions assigned to the British sector of the
Western Front. After three of his divisions were transferred to take part in the
Saint-Mihiel Offensive, Read continued to command the other two divisions, which were attached to the
Australian Corps in the
Ypres sector, and participated in the
Hundred Days Offensive (August–November 1918) that breached the
Hindenburg Line. Read continued to command the II Corps after the
Armistice. After the organization was demobilized in February, 1919 Read was assigned to command of the American Embarkation Center at
Le Havre, France, where he was responsible for arranging the transportation of men and materiel back to the
United States. He was also the final commander of the
42nd Infantry Division as it completed post-war occupation duty in Germany and prepared to depart Europe. For his services during the war Read received numerous awards and decorations, which included the
Army Distinguished Service Medal and the British
Order of the Bath. The citation for his Army DSM states the following: In addition, he received the French
Legion of Honor (Commander), and French
Croix de Guerre with Palm. ==Post–World War I==