A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | 42nd Brigade |
| Division attached to: | 14th (Light) Division |
| Formed from the Machine Gun Sections of: | 5th Bn. Oxfordshire and Buckinghamshire Light Infantry 5th Bn. King’s Shropshire Light Infantry 9th Bn. King’s Royal Rifle Corps 9th Bn. Rifle Brigade |
The 42nd Bde. M.G. Coy. was formed by 24 February 1916 from the Machine Gun Sections of the listed infantry battalions.
As a unit of the 14th (Light) Division during this period, it may have taken part in the following battles and engagements.
| 1916 | |
| BATTLES OF THE SOMME | |
| 13 to 30 August | Battle of Delville Wood [XV Corps, Fourth Army]. |
| 15 and 16 September | Battle of Flers-Courcelette [XV Corps, Fourth Army]. |
| 1917 | |
| 14 March to 05 April | German Retreat to the Hindenburg Line [VII Corps, Third Army]. |
| BATTLES OF ARRAS | |
| 09 to 12 April | First Battle of the Scarpe [VII Corps, Third Army]. |
| 03 and 04 May | Third Battle of the Scarpe [VII Corps, Third Army]. |
| BATTLES OF YPRES | |
| 18 August | Battle of Langemarck [II Corps, Fifth Army]. |
| 22 to 26 August | Fighting on the Menin Road [II Corps, Fifth Army]. (41st Inf. Bde. until 28 August) |
| 12 October | First Battle of Passchendale [X Corps, Second Army]. |
In March 1918, it was amalgamated with the 41st, 43rd, and 224th Machine Gun Companies to form No. 14 Battalion, Machine Gun Corps.
