A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | 37th Brigade |
| Division attached to: | 12th (Eastern) Division |
| Formed from the Machine Gun Sections of: | 6th Bn. Queen’s (Royal West Surrey Regiment) 6th Bn. Buffs (East Kent Regiment) 7th Bn. East Surrey Regiment 6th Bn. Queen’s Own (Royal West Kent Regiment) |
The 37th Bde. M.G. Coy. was formed by 04 February 1916 from the Machine Gun Sections of the listed infantry battalions.
As a unit of the 12th (Eastern) Division during this period, it will have taken part in the following battles and engagements.
| 1916 | |
| 02 to 18 March | Hohenzollern Craters [I Corps, First Army]. |
| BATTLES OF THE SOMME | |
| 02 to 08 July | Battle of Albert [III Corps, Fourth Army, until 05 July; then X Corps, Reserve Army]. |
| 28 July to 13 August | Battle of Pozieres Ridge [II Corps, Reserve Army]. |
| 01 to 18 October | Battle of the Transloy Ridges [XV Corps, Fourth Army]. |
| 1917 | |
| BATTLES OF ARRAS | |
| 09 to 12 April | First Battle of the Scarpe [VI Corps, Third Army]. |
| 28 and 29 April | Battle of Arleux [VI Corps, Third Army]. |
| 03 and 04 May | Third Battle of the Scarpe [VI Corps, Third Army]. |
| 12 May | Attack on Devil’s Trench [VI Corps, Third Army]. (From 20 June to 25 October 1917, a period of eighteen weeks, the 12th Division held the line (east of Monchy) on an active front. (In VII Corps from 20 June to noon, 01 July; then in XVII Corps.).) |
| BATTLE OF CAMBRAI | |
| 20 and 21 November | The Tank Attack [III Corps, Third Army]. |
| 23 to 28 November | Capture of Bourlon Army [III Corps, Third Army]. |
| 30 November to 03 December | German Counter-Attacks [III Corps, Third Army]. |
On 01 March 1918, it was amalgamated with the 35th, 36th, and 235th Machine Gun Companies to form No. 12 Battalion, Machine Gun Corps.
