A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | Divisional Reserve |
| Division attached to: | 4th Division |
The 234th M.G. Coy. joined the 4th Division on the 16 July 1917.
As a unit of the 4th Infantry Division, it will have taken part in the following battles and engagements.
| 1917 | |
| BATTLES OF YPRES | |
| 28 September to 03 October | Battle of Polygon Wood [XIV. Corps, Fifth Army]. |
| 04 October | Battle of Broodseinde [XIV. Corps, Fifth Army]. |
| 09 October | Battle of Poelcappelle [XIV. Corps, Fifth Army]. |
| 12 October | First Battle of Passchendaele [XIV. Corps, Fifth Army]. |
On 26 February 1918, it was amalgamated with the 10th, 11th and 12th Machine Gun Companies to form No. 4 Battalion, Machine Gun Corps.
