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 Section of 5th Bn. Oxfordshire and Buckinghamshire Light Infantry|
|Machine Gun Section of 5th Bn. King's Shropshire Light Infantry|
|Machine Gun Section of 9th Bn. King's Royal Rifle Corps|
|Machine Gun Section of 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) Infantry Division during this period, it may have taken part in the following battles and engagements.
|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].|
|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.