At the outbreak of the Second World War, in September 1939, the 6th Infantry Brigade was part of the 2nd Infantry Division. In October, the brigade, under the command of Brigadier Noel Irwin, moved with the rest of the division to France to become part of the British Expeditionary Force (BEF). The brigade was involved in the short Battle of France fighting at the Battles of The Dyle, St Omer-La Bassée and the retreat to and evacuation from Dunkirk in May–June 1940. With the invasion of Burma by the Imperial Japanese Army in early 1942 the brigade was shipped out to India with the 2nd Division where it would remain for the rest of the war, fighting in the Burma Campaign. It fought in the Arakan and at Kohima and Mandalay.