Broken up 14th September, 1916. (A and one section of C to 153rd Brigade. B and one section of C to 173rd Brigade.) 172nd Brigade R.F.A. A, B, C, D Batteries (18-pounder). Reorganized 22nd May, 1916, into three 4-gun 18-pounder and one 4-gun 4.5 howitzer batteries. (D to 154th Brigade. D/154 joined, becoming D/172.) Reorganized 14th September, 1916, into two 6-gun 18-pounder and one 4-gun 4.5 howitzer batteries. (C broken up and divided between A and B.) D/529 howitzer from England joined 7th October, 1916, becoming C/172. One section of D to 153rd Brigade and one to 173rd Brigade, 13th January, 1917. Brigade became 113th Army Brigade R.F.A., 22nd February, 1917. (A to 77th Brigade.) 173rd Brigade R.F.A. A, B, C, D Batteries (18-pounder). Reorganized 22nd May, 1916, into three 4-gun 18-pounder and one 4-gun 4.5 howitzer batteries. (D to 154th Brigade. B/154 joined, becoming D/173.) Reorganized 14th September, 1916, into three 6-gun 18-pounder and one 4-gun 4.5 howitzer. (B broken up and divided between A and C. B/154 and one section C/154 joined, becoming B/173.) D made up to 6-gun battery 13th January, 1917. (One section from D/172.) Divisional Ammunition Column. (Until May 1916 there had been four Brigade Ammunition Columns.) ROYAL ENGINEERS. 121st Field Company, R.E. 122nd Field Company, R.E. 150th Field Company, R.E. INFANTRY BRIGADES. 107TH INFANTRY BRIGADE. COMMANDERS. Brigadier-General Couchman, C.B. Till 20th October, 1915. Brigadier-General W. M. Withycombe, C.M.G., D.S.O. Till 7th March, 1917. Brigadier-General F. J. M. Rowley, D.S.O. Till 2nd June, 1917. Brigadier-General W. M. Withycombe, C.M.G., D.S.O. Till 30th April, 1918. Brigadier-General E. I. de S. Thorpe, C.M.G., D.S.O. Till 13th September, 1918. Brigadier-General H. J. Brock, C.B., C.M.G., D.S.O. BATTALIONS. 8th Battalion Royal Irish Rifles. Amalgamated with 9th Battalion Royal Irish Rifles, 29th August, 1917, as 8th/9th Battalion Royal Irish Rifles. 9th Battalion Royal Irish Rifles. Amalgamated with 8th Battalion Royal Irish Rifles, 29th August, 1917, as 8th/9th Battalion Royal Irish Rifles. 8th/9th Battalion Royal Irish Rifles. Disbanded 7th February, 1918. 10th Battalion Royal Irish Rifles. Disbanded 20th February, 1918. 15th Battalion Royal Irish Rifles. 1st Battalion Royal Irish Fusiliers. Joined from 4th Division 2nd August, 1917. To 108th Brigade 8th February, 1918. 1st Battalion Royal Irish Rifles. Joined from 8th Division 7th February, 1918. 2nd Battalion Royal Irish Rifles. Joined from 108th Brigade 8th February, 1918. This Brigade was attached to 4th Division from 6th November, 1915, to 7th February, 1916, being replaced during that period by the 12th Infantry Brigade. 108TH INFANTRY BRIGADE. COMMANDERS. Brigadier-General C. Hacket Pain, C.B. Till 4th December, 1916.