66th Brigade, Infantry—Brig. Gen. Paul A. Wolff; 131st and 132nd Regiments; 124th Machine Gun Battalion.
58th Brigade, Field Artillery—Brig. Gen. James A. Shipton; 122d, 123d and 124th Regiments; 108th Trench Mortar Battery.
Engineer Troops—108th Battalion.
Signal Troops—108th Battalion.
Division Units—33d Division Headquarters Troop; 112th Machine Gun Battalion.
78TH DIVISION—Major Gen. James H. McRae, commanding; Lieut. Col. Harry N. Cootes, Chief of Staff; Major William T. MacMill, Adjutant General.
155th Brigade, Infantry—Brig. Gen. Mark L. Hersey; 309th and 310th Regiments; 308th Machine Gun Battalion.
156th Brigade, Infantry—Brig. Gen. James T. Dean; 311th and 312th Regiments; 309th Machine Gun Battalion.
153d Brigade, Field Artillery—Brig. Gen. Clint C. Hearn; 307th, 308th and 309th Regiments; 303d Trench Mortar Battery.
Engineer Troops—303d Regiment.