List of York and Lancaster Regiment battalions

List of Battalions of the York and Lancaster Regiment :

Regulars

 * 1st Battalion (Regular) - World War I - 83rd Brigade, 28th Division. World War II - 15th Brigade, 5th Infantry Division
 * 2nd Battalion (Regular) - World War I - 16th Brigade, 6th Division. World War II - 14th Brigade, 6th Infantry Division (later 70th Infantry Division)

Militia

 * 3rd (Militia) Battalion (3rd West York Regiment of Militia)

Territorials and Volunteers

 * 1st (Hallamshire) Battalion (1881–1908)
 * 2nd Volunteer Battalion (1881–1908)
 * 4th (Hallamshire) Battalion (1908–1924)
 * 5th Battalion (1881–1936)
 * The Hallamshire Battalion (1924–1967)
 * Yorkshire Volunteers (1967–1993)
 * The Hallamshire (T) Battalion (1967–1971)
 * 1/4th (Hallamshire) Battalion - 148th (3rd West Riding) Brigade, 49th (West Riding) Division
 * 1/5th Battalion - 148th (3rd West Riding) Brigade, 49th (West Riding) Division

Hostilities only units

 * 2/4th (Hallamshire) Battalion (1914–1919) - 2nd Line Territorial Army - 187th Brigade, 62nd (2nd West Riding) Division
 * 3/4th (Hallamshire) Battalion (1915–1919) - 3rd Line TA - Home Service
 * 2/5th Battalion (1914–1918) - 2nd Line TA - 187th Brigade, 62nd (2nd West Riding) Division
 * 3/5th Battalion (1915–1916) - 3rd Line TA - Home Service
 * 5th Battalion (1939–1945) (1st Line TA) - converted to 67th Heavy Anti-Aircraft Regiment, Royal Artillery
 * 6th (Service) Battalion (1914–1919) - 32nd Brigade, 11th (Northern) Division
 * 6th Battalion (1939–1947) (2nd Line TA) - 138th Infantry Brigade, 46th (North Midland) Division
 * 7th (Service) Battalion (Pioneers) (1914–1919) - 50th Brigade, 17th (Northern) Division
 * 7th Battalion (Pioneers) (1940–1946) - served in India throughout the war
 * 8th (Service) Battalion (1914–1919) - 70th Brigade, 23rd Division
 * 8th Battalion (Pioneers) (1940–1945) - Indian 25th Division
 * 9th (Service) Battalion (1914–1919) - 70th Brigade, 23rd Division
 * 9th Battalion (1940–1946) - Indian 25th Division
 * 10th (Service) Battalion (1914–1918) - 63rd Infantry Brigade, 21st Division (attached to 37th Division from 1916)
 * 10th Battalion (1940–1941) - converted to 150th Regiment, Royal Armoured Corps, 254th Indian Tank Brigade
 * 11th Reserve Battalion (1914–1916) - 90th Brigade, 33rd Division - Home Service, disbanded 1916
 * 11th Battalion (1940–1944)
 * 12th (Sheffield) (Service) Battalion (1914 - 1918) The Sheffield City Battalion - 94th Brigade, 31st Division
 * 13th (1st Barnsley) (Service) Battalion (1914 - 1915) The Barnsley Pals - 94th Brigade, 31st Division (attached 93rd Brigade from Feb. 1918)
 * 14th (2nd Barnsley) (Service) Battalion (1914 - 1918) The Barnsley Pals - 94th Brigade, 31st Division
 * 15th Reserve Battalion (1915–1916) - Home Service
 * 16th (Transport Workers) Battalion (1916–1919) - Home Service
 * 17th Labour Battalion (1916–1917) - Home Service
 * 18th Battalion ( -1918) - 41st Brigade, 14th (Light) Division (from June 1918)
 * 50th (Holding) Battalion (1940)
 * 53rd (Service) Battalion (1919)