List of orders of battle

This is a list of orders of battle, which list the known military units that were located within the field of operations for a battle or campaign. The battles are listed in chronological order by starting date.

American Civil War

World War I

Battle or campaign	Order of battle	Date
Allies of World War I	Army of Belgium, British Expeditionary Force, British Cavalry Corps, 1914, Indian Army, 1914, Australian Army, French Army, Serbian Army, American Expeditionary Forces on the Western Front	August 1914
Central Powers of World War I	Army of the German Empire, 1914, Imperial German Navy, 1914 German Army, Western Front, 1918	August 1914
Battle of Tannenberg	German Eighth Army and Russian Northwest Front	August 17 – September 1, 1914
Battle of Mons	British Expeditionary Force and German First Army	August 23, 1914
First Battle of the Marne	British Expeditionary Force, French Army, and German Army	September 5–12, 1914
Australian occupation of German New Guinea	Australian Naval and Military Expeditionary Force and German Polizeitruppe	September – November, 1914
First Battle of Ypres	British Expeditionary Force, French Eighth Army, and German Fourth and Sixth Armies	October 19 – November 22, 1914
Battle of Łódź	German and Russian armies	November 11 – December 6, 1914
Battle of Dogger Bank	British and German Fleets	January 24, 1915
Gallipoli campaign	Allied and Ottoman forces	April 25, 1915 – 9 January 9, 1916
Egyptian Expeditionary Force	British, French, and Italian forces	March 10, 1916 – 1918
Battle of Jutland	British and German fleets	May 1916
Battle of the Somme	British, French and German forces	July 1 – November 18, 1916
Battle of Delville Wood	British and German forces	July 14 – 3 September 3, 1916
Desert Column	British forces	December 1916 – August, 1917
Battle of Vimy Ridge	Allied Canadian Corps and German Sixth Army	April 9–12, 1917
Battle of Caporetto	Italian Second Army and German/Austro-Hungarian Fourteenth Army	October 24 – November 19, 1917
Spring Offensive	British, French, and German armies	March 21 – July 18, 1918
Battle of Amiens	British Fourth, French First, and German Second and Eighteenth Armies	August 8, 1918
Battle of Megiddo (1918)	Allied and Ottoman armies	September 19 – October 1, 1918
Meuse-Argonne Offensive	American Expeditionary Force	September 26 – November 11, 1918
US air forces	American Expeditionary Force air service	November 1918

World War II

National forces	National forces
Order of battle	Date
British Expeditionary Force	1940
British First Army	April 20, 1943
British First Army	May 4, 1943
British Long Range Penetration Groups (Chindits)	1943–1944
British Malaya Command	1942
British RAF Coastal Command	September 1939 – June 1944
German Air Force	April 9, 1940
German Ninth Army	October 1941
Italian Expeditionary Corps in Russia	August 1941 - July 1942
Italian Army in Russia	July 1942
Imperial Japanese Navy	December 1941
Japanese forces in the South Pacific	1944–1945
Japanese forces in Southeast Asia	1941–1945
Polish Army	1939
Polish cavalry brigades	1939
Polish Navy	1939
South African Army	September 1939 – July 1940
Soviet Air Force	May 1, 1945
Thai Phayap Army	May 1942 – August 1945
Turkish Army	June 1941