 In 1943 the battalion transferred to the 123rd Indian Infantry Brigade, part of the 5th Indian Infantry Division and served with them in the Burma Campaign.In 1944 the battalion was flown to Imphal to clear Japanese positions.The 4th/5th Battalion, Suffolk Regiment was a Territorial Army unit and was split to help re-create the 5th Battalion, which had been disbanded in the 1920s, in 1939 due to the Territorial Army being doubled as another conflict had, by this time, seemed inevitable.