_General Officer Commanding-in-Chief:_ Field-Marshal Sir J. D. P. FRENCH.
_Chief of the General Staff:_ Lieut.-Gen. Sir A. J. MURRAY.
_Adjutant-General:_ Major-Gen. Sir C. F. N. MACREADY.
_Quartermaster-General:_ Major-Gen. Sir W. R. ROBERTSON.
_First Army Corps:_ Lieut.-Gen. Sir DOUGLAS HAIG.
_1st Division:_ Major-Gen. S. H. LOMAX, wounded October 31st, replaced by Brig.-Gen. LANDON (_temp._), then by Brig.-Gen. Sir D. HENDERSON.
_1st Infantry Brigade:_ Brig.-Gen. F. I. MAXSE, succeeded by Brig.-Gen. FITZCLARENCE, V.C. (killed, November 11th). Col. McEwen then took command. Later on, Col. Lowther was appointed to command the Brigade. 1st Batt. Coldstream Guards. 1st Batt. Scots Guards. London Scottish (joined Brigade in November). 1st Batt. Royal Highlanders (the Black Watch). 2nd Batt. Royal Munster Fusiliers (cut to pieces at Etreux, August 29th, replaced by 1st Batt. Cameron Highlanders).
_2nd Infantry Brigade:_ Brig.-Gen. E. S. BULFIN, wounded November 1st, succeeded by Col. Cunliffe-Owen (_temp._). Brig.-Gen. WESTMACOTT took command November 23rd. 2nd Batt. Royal Sussex Regt. 1st Batt. Northampton Regt. 1st Batt. N. Lancs Regt. 2nd Batt. K.R.R.
_3rd Infantry Brigade:_ Brig.-Gen. H. J. S. LANDON, appointed to command the Division after October 31st, Col. Lovett taking command of Brigade. Brig.-Gen. R. H. K. BUTLER was appointed to command the Brigade November 13th. 1st Batt. The Queen's Royal West Surrey Regt. (cut up October 31st, replaced by 2nd Royal Munster Fusiliers). 1st Batt. S. Wales Borderers. 1st Batt. Gloucester Regt. 2nd Batt. Welsh Regt.
_Divisional Cavalry:_ "C" Squadron 15th Hussars. 1st Cyclist Co.
_Royal Engineers:_ 23rd & 26th Field Cos. 1st Signal Co.
_Royal Artillery:_ R.F.A. Batteries-- XXV. Brigade--113, 114, 115. XXVI. Brigade--116, 117, 118. XXIX. Brigade--46, 51, 54. XLIII. Brigade (Howitzer)--30, 40, 57.
Heavy Battery R.G.A.--26. 1st Divisional Train.
_R.A.M.C.:_ 1st, 2nd, & 3rd Field Ambulances.
_4th (Guards) Brigade_: Brig.-Gen. R. SCOTT-KERR, wounded September 1st and succeeded by Brig.-Gen. the EARL OF CAVAN (arrived September 18th).
2nd Batt. Grenadier Guards. 3rd Batt. Coldstream Guards. 2nd Batt. Coldstream Guards. 1st Batt. Irish Guards. 1st Herts (T.F.) (joined Brigade about November 10th).