A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | 9th Brigade |
| Division attached to: | 3rd Division |
| Formed from the Machine Gun Sections of: | 1st Bn. Northumberland Fusiliers 4th Bn. Royal Fusiliers 12th Bn. West Yorkshire Regiment 1st Bn. Royal Scots Fusiliers |
The 9th Bde. M.G. Coy. was formed by the 08 February 1916 from the Machine Gun Sections of the listed infantry battalions.
As a unit of the 3rd Division, it will have taken part in the following battles and engagements.
| 1916 | |
| 27 March to 04 April | Capture of St. Eloi Craters [V. Corps, Second Army]. |
| 30 April | Second Attack on Bellewaarde [V. Corps, Second Army] |
| BATTLES OF THE SOMME | |
| 14 to 25 July | Battle of Bazentin Ridge [XIII. Corps, Fourth Army] |
| 14 to 19 August | Battle of Delville Wood [XIII. Corps, until midnight 16/17 August, then XIV. Corps, Fourth Army] |
| 13 to 18 November | Battle of the Ancre [V. Corps, Fifth Army] |
| 1917 | |
| BATTLES OF ARRAS | |
| 09 to 14 April | First Battle of the Scarpe [VI. Corps, Third Army]. |
| 23 and 24 April | Second Battle of the Scarpe [VI. Corps, Third Army]. |
| 28 and 29 April | Battle of Arleaux [VI. Corps, Third Army] |
| 03 and 04 May | Third Battle of the Scarpe [VI. Corps, Third Army] |
| 13 and 14 May | Capture of Rouex [VI. Corps, Third Army]. |
| BATTLES OF YPRES | |
| 22 to 25 September | Battle of the Menin Road Ridge [V. Corps, Fifth Army] |
| 25 to 30 September | Battle of Polygon Wood [V. Corps, Fifth Army, until 10 a.m., 28 September, then under II. ANZAZ Corps, Second Army]. |
On 06 March 1918, it was amalgamated with the 8th, 76th and 233rd Machine Gun Companies to form No. 3 Battalion, Machine Gun Corps.
