A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | Divisional Reserve |
| Division attached to: | 3rd Division |
The 233rd M.G. Coy. joined the 3rd Division on the 18 July 1917.
As a unit of the 3rd Division, it will have taken part in the following battles and engagements.
| 1917 | |
| 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, 9th and 76th Machine Gun Companies to form No. 3 Battalion, Machine Gun Corps.
