Independent MG Companies provided fire support for the infantry brigades of Armoured Divisions and Independent Infantry Brigade Groups.
When first formed in 1941, the Independent Brigade Group Machine Gun Company had a Company Headquarters and three platoons, each of four guns, resulting in a Company of 12 Vickers machine guns transported by 15-cwt. trucks.
- II/1931/12G/1 2nd April 1941, An Independent Brigade Group Machine Gun Company – PDF transcript of the War Establishment.
- II/239/1 11th February 1944, An Independent Machine Gun Company – PDF transcript of the War Establishment.
Later developments included a Flamethrower Platoon.
Several regiments provided companies as Independent Machine Gun Companies, including the 4th Bn, Royal Northumberland Fusiliers. At one time, this Battalion was completely broken down to provide Independent Machine Gun Companies and the Battalion headquarters performed an administrative role only.