The 9th (Service) Battalion, Lancashire Fusiliers was a hostilities-only battalion raised in June 1940 The battalion, commanded initially by Lieutenant Colonel Lewis Lyne, was very briefly assigned to the 208th Independent Infantry Brigade (Home) until December, when it was reassigned to the 125th Infantry Brigade, part of 42nd (East Lancashire) Infantry Division, alongside the 1/5th and 1/6th Lancashire Fusiliers. Both the brigade and division had seen active service earlier in the year in Belgium, France and Dunkirk. In late 1941, the 9th Battalion was converted to armour as 143rd Regiment Royal Armoured Corps. However, the regiment was disbanded in 1943.