Pages in category "Military units and formations established in 1921"
The following 200 pages are in this category, out of approximately 352 total. This list may not reflect recent changes.
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- 1st Cavalry Division (United States)
- No. 1 Flying Training School RAAF
- No. 1 Squadron RAF Regiment
- No. 1 Aircraft Depot RAAF
- No. 1 Armoured Car Company RAF
- 1st Battalion, 161st Field Artillery Regiment (United States)
- 1st Battalion, 258th Field Artillery (United States)
- 1st Brigade, 24th Infantry Division (United States)
- 1st Brigade, 104th Division (United States)
- 1st Cavalry Brigade (Australia)
- 1st Division (Australia)
- 1st Field Regiment, Royal New Zealand Artillery
- 1st Motor Brigade (Australia)
- 1st Provisional Air Brigade
- 1st Recruit Training Battalion (United States)
- 2nd Cavalry Division (United States)
- 2nd Armoured Division (Australia)
- 2nd Brigade, 24th Infantry Division (United States)
- 2nd Brigade, 104th Division (United States)
- 2nd Cavalry Brigade (Australia)
- 2nd Division (Australia)
- 2nd Field Regiment, Royal New Zealand Artillery
- 2nd Motor Brigade (Australia)
- 3rd Armoured Division (Australia)
- 3rd Battalion (Australia)
- 3rd Brigade, 104th Division (United States)
- 3rd Cavalry Brigade (Australia)
- 3rd Division (Australia)
- 3rd Field Regiment, Royal New Zealand Artillery
- 3rd Manchester Rifles
- 3rd Motor Brigade (Australia)
- 3rd Rifle Division (Soviet Union)
- 4th Battalion (Australia)
- 4th Brigade, 104th Division (United States)
- 4th Cavalry Brigade (Australia)
- 4th Division (Australia)
- 4th Motor Brigade (Australia)
- 4th Rifle Division (Soviet Union)
- 4th/5th (Queen's Edinburgh Rifles) Battalion, Royal Scots
- V Corps Artillery (United States)
- 5th Motor Brigade (Australia)
- 5th/8th Battalion, Cameronians (Scottish Rifles)
- 6th/7th Battalion, Manchester Regiment
- 7th Battalion (Australia)
- 7th Light Horse Regiment (Australia)
- 8th Battalion (Australia)
- 8th Light Horse Regiment (Australia)
- 9th Battalion, Royal Queensland Regiment
- 10th Terek-Dagestan Army
- 11th Light Horse Regiment (Australia)
- 14th Battalion (Australia)
- 15th Battalion (Australia)
- 16th Battalion, Royal Western Australia Regiment
- 18th Cavalry (India)
- 18th Light Horse Regiment
- 18th Squadron (Observation)
- 21st Cavalry Division (United States)
- 22nd Battalion (Australia)
- 23rd Bomb Squadron
- 23rd Infantry Division (Poland)
- 23rd Field Artillery Regiment (United States)
- 24th Infantry Division (United States)
- 24th Battalion (Australia)
- 24th Fighter Squadron
- 24th Infantry Division (Poland)
- 25th Battalion (Australia)
- 25th Squadron (Bombardment)
- 26th Attack Squadron
- 26th Battalion (Australia)
- 27th Battalion (Australia)
- 28th Battalion (Australia)
- 28th Infantry Division (Poland)
- 29th Battalion (Australia)
- 30th Battalion (Australia)
- 30th Infantry Division (Poland)
- 32nd Battalion (Australia)
- 36th Battalion (Australia)
- 37th Battalion (Australia)
- 38th Battalion (Australia)
- 39th Battalion (Australia)
- 46th Battalion (Australia)
- 47th Battalion (Australia)
- 49th Battalion (Australia)
- 51st (Cornwall and Warwickshire) Medium Brigade, Royal Garrison Artillery
- 51st (Lancashire and Cumberland) Brigade, Royal Field Artillery
- 51st Battalion, Far North Queensland Regiment
- 52nd (Kent) Medium Brigade, Royal Garrison Artillery
- 52nd (Manchester) Brigade, Royal Field Artillery
- 53rd (Bolton) Brigade, Royal Field Artillery
- 53rd (London) Medium Brigade, Royal Garrison Artillery
- 53rd Battalion (Australia)
- 54th (West Riding & Staffordshire) Medium Brigade, Royal Garrison Artillery
- 54th Battalion (Australia)
- 55th (Northumbrian) Medium Brigade, Royal Garrison Artillery
- 55th (Wessex) Brigade, Royal Field Artillery
- 55th Battalion (Australia)
- 56th Air Defense Artillery Regiment
- 56th (Highland) Medium Brigade, Royal Garrison Artillery
- 56th (Wessex) Army Field Brigade, Royal Artillery
- 57th (Lowland) Medium Brigade, Royal Garrison Artillery
- 57th Rifle Division
- 58th (Porton) Company, Royal Engineers
- 59th (Home Counties) (Cinque Ports) Brigade, Royal Field Artillery
- 59th Battalion (Australia)
- 60th (6th Cheshire and Shropshire) Medium Brigade, Royal Garrison Artillery
- 60th (North Midland) Brigade, Royal Field Artillery
- 61st (North Midland) Field Regiment, Royal Artillery
- 61st Cavalry Division (United States)
- 62nd (North Midland) Brigade, Royal Field Artillery
- 62nd Cavalry Division (United States)
- 64th Cavalry Division (United States)
- 65th Cavalry Division (United States)
- 67th (South Midland) Brigade, Royal Field Artillery
- 68th (South Midland) Brigade, Royal Field Artillery
- 73rd (Northumbrian) Brigade, Royal Field Artillery
- 75th Field Artillery Brigade (United States)
- 76th (Highland) Brigade, Royal Field Artillery
- 77th (Highland) Brigade, Royal Field Artillery
- 78th (Lowland) Brigade, Royal Field Artillery
- 79th (Lowland) Brigade, Royal Field Artillery
- 80th (Lowland) Brigade, Royal Field Artillery
- 81st (Welsh) Brigade, Royal Field Artillery
- 82nd (Welsh) Brigade, Royal Field Artillery
- 84th (East Anglian) Brigade, Royal Field Artillery
- 86th (East Anglian) (Hertfordshire Yeomanry) Brigade, Royal Field Artillery
- 86th Infantry Brigade Combat Team
- 87th Infantry Brigade (United States)
- 89th (3rd West Lancashire) Brigade, Royal Field Artillery
- 92nd (5th London) Brigade, Royal Field Artillery
- 93rd (Westmorland and Cumberland Yeomanry) Brigade, Royal Field Artillery
- 94th (Somerset Yeomanry) Brigade, Royal Field Artillery
- 95th (Hampshire Yeomanry) Brigade, Royal Field Artillery
- 96th (Royal Devon Yeomanry) Brigade, Royal Field Artillery
- 101st Intelligence Squadron
- 102nd Infantry Division (United States)
- 103rd (Suffolk) Brigade, Royal Field Artillery
- 103rd Cavalry Regiment
- 103rd Engineer Battalion (United States)
- 103rd Infantry Division (United States)
- 104th (Essex Yeomanry) Brigade, Royal Field Artillery
- 104th Cavalry Regiment
- 104th Fighter Squadron
- 104th Infantry Division (United States)
- 105th Medium Battery, Royal Australian Artillery
- 106th (Lancashire Yeomanry) Brigade, Royal Field Artillery
- 106th Cavalry Regiment
- 108th Cavalry Regiment
- 109th Cavalry Regiment (United States)
- 110th Cavalry Regiment (United States, 1921–1940)
- 111th Fighter Escadrille
- 111th Cavalry Regiment
- 113th Cavalry Regiment
- 144th Infantry Regiment (United States)
- 159th Infantry Brigade (United Kingdom)
- 160th Field Artillery Regiment (United States)
- 186th Infantry Regiment (United States)
- 187th Infantry Brigade (United States)
- 188th Infantry Brigade (United States)
- 189th Field Artillery Regiment (United States)
- 189th Infantry Brigade (United States)
- 194th Armored Brigade (United States)
- 196th Infantry Brigade (United States)
- 197th Infantry Brigade (United States)
- 199th Infantry Brigade (United States)
- 201st (East Lancashire) Field Battery, Royal Artillery
- 202nd (East Lancashire) Field Battery, Royal Artillery
- 203rd (Cumberland) Field Battery, Royal Artillery
- 203rd Engineer Battalion (United States)
- 204th (Cumberland) Field Battery, Royal Artillery
- 205th (East Lancashire) Field Battery, Royal Artillery
- 205th Infantry Brigade (United States)
- 206th (East Lancashire) Field Battery, Royal Artillery
- 207th (East Lancashire) Field Battery, Royal Artillery
- 208th (East Lancashire) Field Battery, Royal Artillery
- 209th (East Lancashire) Field Battery, Royal Artillery
- 210th (East Lancashire) Field Battery, Royal Artillery
- 211th (East Lancashire) Field Battery, Royal Artillery
- 212th (East Lancashire) Field Battery, Royal Artillery
- 213th (Hampshire) Field Battery, Royal Artillery
- 214th (Hampshire) Field Battery, Royal Artillery
- 215th (Hampshire) Field Battery, Royal Artillery
- 216th (Hampshire) Field Battery, Royal Artillery
- 217th (Hampshire) Field Battery, Royal Artillery
- 218th (Hampshire) Field Battery, Royal Artillery
- 219th (Hampshire) Field Battery, Royal Artillery
- 220th (Wiltshire) Field Battery, Royal Artillery
- 221st (Devon) Field Battery, Royal Artillery
- 221st (Peterhead) Medium Battery, Royal Artillery
- 222nd (Devon) Field Battery, Royal Artillery
- 222nd (Fraserburgh) Medium Battery, Royal Artillery
- 223rd (Banffshire) Medium Battery, Royal Artillery
- 223rd (Devon) Field Battery, Royal Artillery
- 224th (Dorset) Field Battery, Royal Artillery
- 224th (Fife) Medium Battery, Royal Artillery
- 225th (City of Edinburgh) Medium Battery, Royal Artillery
- 225th (Sussex) Field Battery, Royal Artillery
- 226th (City of Edinburgh) Medium Battery, Royal Artillery
- 226th (Sussex) Field Battery, Royal Artillery
- 227th (Haddington) Medium Battery, Royal Artillery
- 227th (Sussex) Field Battery, Royal Artillery