Signal Troops—310th Battalion.
Division Units—85th Division Headquarters Troop; 328th Machine Gun Battalion.
91ST DIVISION—Brig. Gen. F. H. Foltz, commanding; Colonel Herbert J. Brees, Chief of Staff; Major Frederick W. Manley, Adjutant General.
181st Brigade, Infantry—Brig. Gen. John B. McDonald; 361st and 362d Regiments; 347th Machine Gun Battalion.
182d Brigade, Infantry—Brig. Gen. Frederick S. Foltz; 363d and 364th Regiments; 348th Machine Gun Battalion.
166th Brigade, Field Artillery—Brig. Gen. Edward Burr; 346th, 347th and 348th Regiments; 316th Trench Mortar Battery.
Engineer Troops—316th Regiment.
Signal Troops—316th Battalion.
Division Units—91st Division Headquarters Troop; 346th Machine Gun Battalion.