The Divisional (Machine Gun) Battalions were established as part of the mobilisation of the British Army in the mid to late 1930s. They were formed under the same principles as the Brigade Machine Gun Companies of the Great War, which eventually became the Machine Gun Corps. The theory was that Medium Machine Guns were best as part of a Divisional or Brigade asset and the Infantry Battalion would have lighter weapons, with few exceptions (for example, Chindits, Airlanding Battalions, and Parachute Battalions).
Machine Gun Battalions were formed by converting regular Infantry Battalions to the new establishment. It was originally intended that a large number of Battalions would be converted; however, it ended up being just a select few Regiments, with, in some cases, only a few Battalions of those Regiments being converted.
The Regiments that had Battalions converted were:
- Argyll & Sutherland Highlanders
- Cheshire Regiment
- Gloucestershire Regiment
- Gordon Highlanders
- Kensington Regiment
- Manchester Regiment
- Middlesex Regiment
- Royal Northumberland Fusiliers
The War Establishment during the Second World War notified on 14 August 1940 replaced the one for those where machine gun battalions were equipped with anti-tank gun as well.
War Establishment II/1931/12 C/3, 14 August 1940
|Officers||Warrant Officers||Staff-serjeants and serjeants||Rank and file||Total||Motor cars, 4-seater||Motor cycles|
|Headquarter company (attached)||1||..||3||6||10||..||..|
|4 machine gun companies||12||12||28||524||576||..||21|
|Total, battalion||20||(a) 16||36||(b) 652||724||1||50|
|Total, battalion (including attached)||21||16||39||658||734||1||50|
|Not included in above totals|
|Details left at base –|
|Orderly room serjeant||1||1|
|First reinforcements||(c) 4||3||4||(v) 65||76|
To allow for the specific requirements of the fighting in the Middle East, a variant of the Machine Gun Battalion used there included 2-pounder anti-tank guns and a 3-inch mortar in each machine gun company headquarters. Rather than just standard 15-cwt. trucks it allowed for the ‘Truck, 15-cwt. 4 x 4, Armoured Personnel’ to be used where they were available, more commonly known as the M3A1 White Scout Car.
In February, 1944, the machine gun battalion establishment was changed. The most substantial differences were in the inclusion of a Heavy Mortar Company, using the 4.2-inch mortar, and the MMG fighting elements were transported in Universal Carriers. A summary diagram is shown below and the full establishment is available to download.
As Universal Carriers weren’t available to equip all machine gun battalions across the British Army at that time, the Middle East variant of the Machine Gun Battalion was changed. This included four machine gun companies (without a heavy mortar company) but three of the companies were transported in 15-cwt. trucks, whilst only the fourth had Universal Carriers. It also had a reduced organisational structure without a separate Headquarters Company – these functions and personnel were within the Battalion headquarters. A full transcript of the War Establishment is available as a PDF download.
Whilst the Machine Gun Battalion was the organisation that they started and ended the Second World War with, there was a deviation to the Divisional (Support) Battalion that incorporated a Brigade-focused structure with three Companies, each with machine gun, mortar and light anti-aircraft assets.
In 1946, and possibly the last iteration of a machine gun battalion, there were minor changes to the war establishment and these did not affect the machine gun companies themselves – the battalion commanding officer received different transport and the trucks used were changed from 4 x 2 to 4 x 4 vehicles.
The brigading of machine guns stopped soon after the Second World War ended and the machine guns were, once again, returned to Infantry Battalions as a Machine Gun Platoon.