A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division, an additional Company was attached as a divisional reserve.
| Brigade attached to: | Divisional Reserve |
| Division attached to: | 2nd Division |
The 242nd M.G. Coy. was formed on the 18 July 1917.
On 04 March 1918, it was amalgamated with the 5th, 6th and 99th Machine Gun Companies to form No. 2 Battalion, Machine Gun Corps.
As a unit of the 2nd Infantry Division, it will have taken part in the following battles and engagements.
| 1917 | |
| BATTLE OF CAMBRAI | |
| 27 and 28 November | Capture of Bourlon Wood [IV. Corps, Third Army]. |
| 30 November to 03 December | German Counter Attacks [IV. Corps, handed over on 01 December to V. Corps, Third Army] |