Infantry Battalion

Infantry battalions have been the majority of the British Army throughout its existence. There were variations on how an infantry battalion was used depending on the context.

The Great War

At the outbreak of the Great War, the infantry battalion consisted for four companies of four platoons each and included a Machine Gun Section attached to the Battalion Headquarters.


In 1915, the Machine Gun Corps was formed and the Vickers machine guns were replaced with Lewis Guns in the infantry battalion. Brigade Machine Gun Companies were formed in each Infantry Brigade to coordinate and control how machine gunnery was employed. These were replaced by Machine Gun Battalions in 1918.

The Inter-War Period

When the Machine Gun Corps was disbanded in 1922, the machine guns were returned to the infantry battalions. They initially formed a Machine Gun Platoon and then it expanded to a Machine Gun Company with the other three companies of the battalion as rifle companies.

From 1936, the machine gun capability of the infantry battalion was withdrawn and Infantry (Machine Gun) Battalions were formed.

The Second World War

During the Second World War, only infantry battalions in specific roles used the Vickers machine gun. They included those identified as Divisional (Machine Gun) Battalions‘Chindit’ Special Force Battalions, Motor Battalions and Airlanding Battalions.

To understand how the ‘traditional’ infantry battalion was formed and established during the War, the following transcripts of the War Establishments are available as PDF downloads:


  • Gudmundson, 2005
  • The National Archives, WO 24/939, War Establishments 1941 January to June.