A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | 25th Brigade |
| Division attached to: | 8th Division |
| Formed from the Machine Gun Sections of: | 2nd Bn. The Lincolnshire Regiment 2nd Bn. The Royal Berkshire Regiment 2nd Bn. The Royal Irish Rifles 2nd Bn. The Rifle Brigade |
The 25th Bde. M.G. Coy. was formed on 19 January 1916 from the Machine Gun Sections of the listed infantry battalions.
As a unit of the 8th Division, it will have taken part in the following battles and engagements.
| 1916 | |
| BATTLES OF THE SOMME | |
| 01 July | Battle of Albert [III. Corps, Fourth Army]. |
| 23 to 30 October | Attack on le Tresnoy [XIV. Corps, Fourth Army]. |
| 1917 | |
| 04 March | Bouchavesnes [XV. Corps, Fourth Army]. |
| 14 March to 05 April | German Retreat to the Hindenburg Line [XV. Corps, Fourth Army]. |
| BATTLES OF YPRES | |
| 31 July and 01 August | Battle of Pilckem Ridge [II. Corps, Fifth Army]. |
| 31 July | Attack on Westhoek. |
| 16 to 18 August | Battle of Langemarck [II. Corps, Fifth Army]. |
| 02 December | Assault of Southern Redoubt, Passchedaele (25th Bde.) [VIII. Corps, Second Army]. |
| 1918 | |
| FIRST BATTLES OF THE SOMME | |
| 23 March | Battle of St. Quentin [XIX. Corps, Fifth Army]. |
| 24 and 25 March | Actions at the Somme Crossings [XIX. Corps, Fifth Army]. |
| 26 and 27 March | Battle of Rosieres [XIX. Corps, Fifth Army]. |
On 20 April 1918, it was amalgamated with the 23rd, 24th and 218th Machine Gun Companies to form No. 8 Battalion, Machine Gun Corps.
