A Machine Gun Company was attached to each Infantry Brigade and their subsequent Division.
| Brigade attached to: | 27th Brigade |
| Division attached to: | 9th (Scottish) Division |
| Formed from the: | Machine Gun Section of 11th Bn. The Royal Scots |
| Machine Gun Section of 12th Bn. The Royal Scots | |
| Machine Gun Section of 6th Bn. The Royal Scots Fusiliers | |
| Machine Gun Section of 10th Bn. The Argyll and Sutherland Highlanders |
The 27th Bde. M.G. Coy. was formed on 23 December 1915 from the Machine Gun Sections of the listed infantry battalions.
On 01 March 1918, it was amalgamated with the 26th, 28th and 197th Machine Gun Companies to form No. 9 Battalion, Machine Gun Corps.
As a unit of the 9th Infantry Division, it will have taken part in the following battles and engagements.
| 1916 | |
| BATTLES OF THE SOMME | |
| 01 to 13 July | Battle of Albert (In Corps Reserve on 01 July) [XIII. Corps, Fourth Army] |
| 03 July | Capture of Bernafay Wood (27th Bde.) |
| 14 July | Battle of Bazentin Ridge [XIII Corps, Fourth Army]. |
| 15 to 19 July | Battle of Delville Wood [XIII Corps, Fourth Army]. |
| 10 to 18 October | Battle of the Transloy Ridges [III Corps, Fourth Army] |
| 12 to 18 October | Attacks on the Butte de Warlencourt. |
| 1917 | |
| 09 to 15 April and 30 April to 10 May | BATTLES OF ARRAS. |
| 09 to 14 April | First Battle of the Scarpe [XVII Corps, Third Army]. |
| 03 and 04 May | Third Battle of the Scarpe [XVII Corps, Third Army]. |
| 18 to 23 September and 11 to 25 October | BATTLES OF YPRES. |
| 20 to 23 September | Battle of the Menin Road Ridge [V Corps, Fifth Army]. |
| 12 October | First Battle of Passchendaele [XVIII Corps, Fifth Army]. |