century, 4,429 engagements
Battles of the 20th century
4,429 engagements of the 20th century are placed in the atlas: 3,340 battles, 141 sieges, 221 naval actions and 727 campaigns across 162 present-day countries, most in France (324), China (239), Vietnam (233). The century's largest wars by placed engagements: World War II (1,038), World War I (584), Pacific War (404), Vietnam War (193).
Engagements by decade
Wars of the century 149 with pages
- World War II 1,038
- World War I 584
- Pacific War 404
- Vietnam War 193
- Chinese Civil War 109
- Spanish Civil War 107
- Korean War 96
- Second Sino-Japanese War 75
- Russian Civil War 69
- Polish–Soviet War 44
- Iran–Iraq War 41
- Western Sahara War 39
- First Balkan War 29
- Yom Kippur War 29
- Gulf War 28
- 1948 Arab–Israeli War 28
- Falklands War 27
- First Indochina War 23
- Finnish Civil War 23
- Russo-Japanese War 21
- Continuation War 19
- Mexican Revolution 19
- Croatian War of Independence 18
- Italo-Turkish War 17
- Soviet-Afghan War 16
- Algerian War 16
- Winter War 15
- Greco-Turkish War 14
- Rif War 13
- Guerilla war in the Baltic states 13
Most widely documented engagements
| Date | Engagement | Place | War |
|---|---|---|---|
| 23 August 1942 | Battle of Stalingrad | Volgograd | World War II |
| 1945 | atomic bombings of Hiroshima and Nagasaki | Hiroshima | Pacific War |
| 1941 | Operation Barbarossa | Ukrainian Soviet Socialist Republic | World War II |
| 7 December 1941 | Attack on Pearl Harbor | Pearl Harbor, Hawaii | Pacific War |
| 1957 | Suez Crisis | Sinai Peninsula | Arab–Israeli conflict |
| 1939 | 1939 Invasion of Poland | Poland | World War II |
| 1940 | Battle of Britain | United Kingdom | World War II |
| 1915 | Gallipoli Campaign | Gallipoli | World War I |
| 1940 | Battle of France | France | World War II |
| 1943 | Battle of Kursk | Kursk | World War II |
| 16 April 1945 | Battle of Berlin | Berlin | World War II |
| 6 June 1944 | Normandy landings | Normandy | World War II |
| 8 September 1941 | Siege of Leningrad | Saint Petersburg | World War II |
| 21 February 1916 | Battle of Verdun | Verdun | World War I |
| 1 July 1916 | Battle of the Somme | River Somme | World War I |
| 4 June 1942 | Battle of Midway | Midway Atoll | Pacific War |
| the 1941s | Battle of Moscow | Moscow Oblast | World War II |
| 8 February 1945 | Battle of Iwo Jima | Iwo Jima | Pacific War |
| 1944 | Battle of the Bulge | Ardennes | World War II |
| 1944 | Operation Overlord | Normandy | World War II |
| 8 September 1914 | First Battle of the Marne | Aulnois | World War I |
| 13 March 1954 | Battle of Dien Bien Phu | Điện Biên Phủ | First Indochina War |
| 1944 | 20 July plot | Wolf's Lair | World War II |
| 1945 | Battle of Okinawa | Okinawa Islands | Pacific War |
| 31 May 1916 | Battle of Jutland | North Sea | World War I |
| 4 June 1940 | Dunkirk evacuation | English Channel | World War II |
| 1939 | Soviet invasion of Poland | Poland | World War II |
| 1944 | Operation Bagration | Byelorussian Soviet Socialist Republic | World War II |
| 1943 | Allied invasion of Sicily | Sicily | World War II |
| 1939 | Battle of the Atlantic | Atlantic Ocean | World War II |
| 1905 | Battle of Tsushima | Tsushima Strait | Russo-Japanese War |
| 1942 | Operation Torch | French protectorate in Morocco | World War II |
| 20 January 1990 | Black January | Baku | Revolutions of 1989 |
| 1940 | Operation Weserübung | World War II | |
| 23 August 1914 | Battle of Tannenberg | Olsztyn | World War I |
| 26 May 1940 | Battle of Dunkirk | Dunkirk | World War II |
| 1940 | North African campaign | Kingdom of Egypt | World War II |
| 1944 | Operation Market Garden | Netherlands | World War II |
| 7 July 1937 | Marco Polo Bridge incident | Lugou Bridge | Second Sino-Japanese War |
| 1974 | Turkish invasion of Cyprus | Cyprus | Cyprus problem |
| 1945 | Bombing of Dresden | Dresden | World War II |
| 11 May 1939 | Battles of Khalkhin Gol | Khalkhyn River | Soviet–Japanese border conflicts |
| 4 May 1942 | Battle of the Coral Sea | Coral Sea | Pacific War |
| 17 January 1944 | Battle of Monte Cassino | Monte Cassino | World War II |
| 19 August 1944 | Liberation of Paris | Paris | World War II |
| 23 October 1942 | Second Battle of El Alamein | El Alamein | Battles of El Alamein |
| 24 October 1917 | Battle of Caporetto | Kobarid | World War I |
| 31 July 1917 | Third Battle of Ypres | Ypres Salient | World War I |
| 1920 | Battle of Warsaw | Warsaw | Polish–Soviet War |
| the 1990s | Siege of Sarajevo | Sarajevo | War in Bosnia and Herzegovina |
| 1942 | Guadalcanal campaign | Guadalcanal | Pacific War |
| 23 October 1944 | Battle of Leyte Gulf | Leyte Gulf | Pacific War |
| 20 May 1941 | Battle of Crete | Crete | World War II |
| 1 July 1942 | First Battle of El Alamein | El Alamein | Battles of El Alamein |
| 1943 | Italian Campaign | Italy | World War II |
| 1937 | Bombing of Guernica | Guernica | Spanish Civil War |
| 8 February 1942 | Battle of Singapore | Singapore in the Straits Settlements | Pacific War |
| 1940 | the Blitz | United Kingdom | home front during World War II |
| 1968 | Tet Offensive | South Vietnam | Vietnam War |
| 1990 | Iraqi invasion of Kuwait | Kuwait | Gulf War |
| 19 August 1942 | Dieppe Raid | Dieppe | World War II |
| 1941 | Anglo-Soviet invasion of Iran | Pahlavi dynasty | World War II |
| 1940 | Operation Compass | Sidi Barrani | World War II |
| 1943 | Operation Uranus | Volgograd | World War II |
| 1941 | Battle of Kiev | Kyiv | World War II |
| 1940 | German invasion of the Netherlands | Netherlands | World War II |
| 1945 | Soviet invasion of Manchuria | Inner Manchuria | Soviet–Japanese War |
| 20 November 1917 | Battle of Cambrai | Cambrai | World War I |
| 12 May 1942 | Second Battle of Kharkov | Kharkiv | World War II |
| 19 February 1943 | Third Battle of Kharkov | Kharkiv | World War II |
| 1945 | Soviet–Japanese War | Manchukuo | Pacific War |
| 1944 | Operation Dragoon | Southern France | World War II |
| 1941 | Battle of Greece | Kingdom of Greece | World War II |
| 1914 | Caucasus campaign | Eastern Anatolia Region | World War I |
| 30 October 1941 | Siege of Sevastopol | Sevastopol | history of Sevastopol |
| 1916 | Brusilov Offensive | Galicia | World War I |
| 2 October 1944 | Battle of Aachen | Aachen | World War II |
| 1983 | 1983 Invasion of Grenada | Grenada | human history |
| 19 June 1944 | Battle of the Philippine Sea | Philippine Sea | Pacific War |
| 25 August 1991 | Battle of Vukovar | Vukovar | Croatian War of Independence |
| 4 August 1914 | Battle of Liège | Liège | World War I |
| 1941 | Invasion of Yugoslavia | Kingdom of Yugoslavia | World War II |
| 1942 | Doolittle Raid | Greater Tokyo Area | Pacific War |
| 13 December 1939 | Battle of the River Plate | World War II | |
| 1941 | Battle of Smolensk | Smolensk | World War II |
| 1939 | Gleiwitz incident | Gliwice | Operation Himmler |
| 1989 | United States invasion of Panama | Panama | war on drugs |
| 30 April 1975 | Fall of Saigon | Ho Chi Minh City | Vietnam War |
| 1988 | Anfal campaign | Iraq | Iraqi–Kurdish conflict |
| 1939 | Italian invasion of Albania | Albania | interwar period |
| 1918 | Spring Offensive | West Flanders | World War I |
| 24 December 1944 | Siege of Budapest | Budapest | World War II |
| 1945 | Prague offensive | Prague | World War II |
| 8 December 1914 | Battle of the Falkland Islands | Falkland Islands | World War I |
| 1940 | World War II in the Balkans | Albania | World War II |
| 7 April 1945 | Operation Ten-Go | Pacific Ocean | Pacific War |
| 1940 | German invasion of Belgium | Belgium | World War II |
| 1981 | Operation Opera | Baghdad | Arab–Israeli conflict |
| 1928 | Northern Expedition | People's Republic of China | Warlord Era |
| 1918 | Hundred Days Offensive | Péronne | World War I |
| 1945 | Vistula–Oder Offensive | Poland | World War II |
| 21 April 1915 | Second Battle of Ypres | Ypres | World War I |
| 1945 | Philippines campaign of 1944–1945 | Philippines | Pacific War |
| 2 August 1964 | Gulf of Tonkin incident | Gulf of Tonkin | Vietnam War |
| 1931 | Japanese invasion of Manchuria | Inner Manchuria | Second Sino-Japanese War |
| 22 December 1914 | Battle of Sarikamish | Sarıkamış | World War I |
| 1943 | Battle of the Dnieper | Dnieper | World War II |
| 26 May 1942 | Battle of Gazala | Gazala | World War II |
| 1941 | Battle of Białystok–Minsk | Belarus | World War II |
| 1941 | Operation Crusader | Egypt | World War II |
| 1 September 1939 | Battle of Westerplatte | Westerplatte | World War II |
| 23 August 1914 | Battle of Galicia | Lviv | World War I |
| 19 October 1914 | First Battle of Ypres | Ypres | World War I |
| 1942 | Case Blue | Rostov-on-Don | World War II |
| 20 November 1943 | Battle of Tarawa | Betio | Pacific War |
| 13 August 1937 | Battle of Shanghai | Shanghai | Second Sino-Japanese War |
| 11 November 1940 | Battle of Taranto | Taranto | World War II |
| 27 November 1944 | Battle of Peleliu | Peleliu | Pacific War |
| 1941 | Philippines Campaign | Philippines | Pacific War |
| 22 January 1944 | Battle of Anzio | Anzio | World War II |
| 20 October 1941 | First Battle of Kharkov | Kharkiv | World War II |
| 1939 | Saar Offensive | Saarland | World War II |
| 1915 | Serbian campaign | Kingdom of Serbia | World War I |
| 1942 | Tunisia campaign | French protectorate of Tunisia | World War II |
| 1945 | Operation Spring Awakening | Lake Balaton | World War II |
| 21 January 1968 | Battle of Khe Sanh | Khe Sanh | Vietnam War |
| 1943 | Battle of Kasserine Passe | Tunisia | World War II |
| 7 September 1914 | First Battle of the Masurian Lakes | Masurian Lake District | World War I |
| 8 August 1941 | Siege of Odesa 1941 | Odesa | World War II |
| 1938 | Battle of Lake Khasan | Zaozyornaya | Soviet–Japanese border conflicts |
| 1940 | Rotterdam Blitz | Rotterdam | World War II |
| 9 September 1939 | Battle of the Bzura | Kutno | World War II |
| 1914 | Mesopotamian campaign | Mesopotamia | World War I |
| 1944 | Belgrade offensive | Belgrade | World War II |
| 1 November 1914 | Battle of Coronel | Pacific Ocean | World War I |
| 15 September 1950 | Battle of Inchon | Incheon | Korean War |
| 1940 | Norwegian Campaign | Norway | World War II |
| 1921 | Red Army invasion of Georgia | South Caucasus | Russian Civil War |
| 27 May 1918 | Second Battle of the Marne | Marne basin | World War I |
| 1978 | South Lebanon conflict | Southern Lebanon | Israeli–Palestinian conflict |
| 14 September 1944 | Battle of Hürtgen Forest | Hürtgen Forest | World War II |
| 1941 | Battle of Rostov | Rostov-on-Don | World War II |
| 1942 | Solomon Islands Campaign | Solomon Islands | Pacific War |
| 8 September 1939 | Siege of Warsaw | Warsaw | World War II |
| 7 December 1939 | Battle of Suomussalmi | Suomussalmi | Winter War |
| 1940 | Bombing of Tokyo | Tokyo | Pacific War |
| 10 April 1941 | Siege of Tobruk | Tobruk | World War II |
| 11 June 1940 | Siege of Malta | Crown Colony of Malta | World War II |
| 1944 | Operation Ichi-Go | South China | Second Sino-Japanese War |
| 15 June 1944 | Battle of Saipan | Saipan | Pacific War |
| 17 September 1943 | Allied invasion of Italy | Salerno | World War II |
| 1941 | Syria–Lebanon campaign | Lebanon | World War II |
| 1986 | 1986 United States bombing of Libya | Libya | Cold War |
| 5 May 1942 | Battle of Madagascar | Madagascar | World War II |
| 1918 | Meuse-Argonne Offensive | Grand Est | World War I |
| 1942 | Burma Campaign | British Raj | Pacific War |
| 1940 | German invasion of Denmark | Denmark | World War II |
| 1942 | Aleutian Islands Campaign | Aleutian Islands, Alaska | Pacific War |
| 1943 | Battle of Smolensk | Smolensk | World War II |
| 1942 | Operation Mars | Rzhev | World War II |
| 1943 | Bombing of Hamburg in World War II | Hamburg | World War II |
| 1944 | Battle of Kohima | Kohima | Pacific War |
| 3 July 1940 | Attack on Mers-El-Kebir | Mers El Kebir | World War II |
| 12 July 1943 | Battle of Prokhorovka | Prokhorovka, Belgorod Oblast | World War II |
| 1940 | Italian invasion of Egypt | Egypt | World War II |
| 1942 | Operation Anthropoid | World War II | |
| 22 May 1918 | Battle of Sardarabad | Sardarapat | World War I |
| 1 October 1991 | Siege of Dubrovnik | Dubrovnik | Croatian War of Independence |
| 1975 | Green March | Spanish Sahara | Spanish–Moroccan conflicts |
| 5 May 1945 | Battle of Castle Itter | Itter Castle | World War II |
| 1946 | King David Hotel bombing | King David Hotel | Jewish insurgency in Mandatory Palestine |
| 27 February 1942 | Battle of the Java Sea | Java Sea | Pacific War |
| 9 April 1917 | Battle of Vimy Ridge | Vimy | World War I |
| 27 March 1941 | Battle of Cape Matapan | Cape Matapan | World War II |
| 12 August 1944 | Falaise Pocket | Normandy | World War II |
| 1945 | East Prussian Offensive | East Prussia | World War II |
| 4 November 1918 | Battle of Vittorio Veneto | Vittorio Veneto | World War I |
| 22 June 1915 | Gorlice–Tarnów Offensive | Tarnów | World War I |
| 6 September 1914 | Battle of the Frontiers | Lorraine | World War I |
| 1917 | Kerensky Offensive | Galicia | World War I |
| 1944 | Mariana and Palau Islands campaign | Micronesia | Pacific War |
| 10 August 1944 | Battle of Guam | Guam | Pacific War |
| 1945 | Battle of Manila | Manila | Pacific War |
| 20 May 1942 | Demyansk Pocket | Demyansk | World War II |
| 1903 | British expedition to Tibet | Tibet | |
| June 1941 | Defense of Brest Fortress | Brest Fortress | World War II |
| 1944 | Crimean Offensive | Crimea | World War II |
| 24 May 1941 | Battle of the Denmark Strait | Denmark Strait | World War II |
| 2 October 1944 | Battle of the Scheldt | Scheldt | World War II |
| 8 December 1941 | Battle of Hong Kong | British Hong Kong | Pacific War |
| 16 September 1914 | Siege of Przemyśl | Przemyśl | World War I |
| 1944 | Operation Cobra | Cotentin Peninsula | World War II |
| 27 August 1914 | Siege of Tsingtao | Qingdao | World War I |
| 26 May 1942 | Battle of Bir Hakeim | Bir Hakeim | World War II |
| 17 August 1914 | Battle of Stallupönen | Nesterov | World War I |
| 2 March 1943 | Battle of the Bismarck Sea | Vitiaz Strait | Pacific War |
| 12 January 1943 | Operation Spark | Saint Petersburg | World War II |
| 1942 | Battles of Rzhev | Rzhev | World War II |
| 1944 | Operation Nordwind | Alsace | World War II |
| 1940 | Norwegian heavy water sabotage | Vemork | World War II |
| 15 July 1941 | Battle of Uman | Zelena Brama | World War II |
| 30 April 1980 | Iranian Embassy Siege | South Kensington | Arab separatism in Khuzestan |
| 1914 | Persian Campaign | Qajar Iran | World War I |
| 6 February 1905 | Battle of Mukden | Shenyang | Russo-Japanese War |
| 17 September 1944 | Battle of Arnhem | Arnhem | World War II |
| 1980 | Operation Eagle Claw | Tehran | consolidation of the Iranian Revolution |
| 1961 | Annexation of Goa | Portuguese India | Portuguese Colonial War |
| 1943 | Battle of the Caucasus | Caucasus | World War II |
| 1945 | Western Allied invasion of Germany | Germany | World War II |
| 1943 | Operation Kutuzov | Oryol | World War II |
| 15 August 1914 | Battle of Cer | Cer | World War I |
| 1941 | Battle of Guam | Guam | Pacific War |
| 1942 | Battle of Savo Island | Savo Island | Pacific War |
| 1943 | Battle of Kiev | Kyiv | World War II |
| 1939 | Operation Tannenberg | General Government | World War II |
| 9 April 1940 | Battles of Narvik | Nordland | World War II |
| 14 November 1965 | Battle of Ia Drang | Ia Drang River | Vietnam War |
| 8 August 1918 | Battle of Amiens | Amiens | World War I |
| 19 April 1915 | Siege of Van | Van | World War I |
| 8 December 1941 | Battle of Wake Island | Peale Island | Pacific War |
| 7 June 1917 | Battle of Messines | West Flanders | World War I |
| 8 February 1904 | Battle of Port Arthur | Lüshunkou District | Russo-Japanese War |
| 1945 | Borneo campaign | Borneo | Pacific War |
| 1943 | Gilbert and Marshall Islands Campaign | Micronesia | Pacific War |
| 9 April 1917 | Battle of Arras | Arras | World War I |
| 1914 | Race to the Sea | France | World War I |
| 1914 | Siege of Antwerp | Antwerp | World War I |
| 24 January 1944 | Battle of the Korsun–Cherkassy Pocket | Cherkasy | World War II |
| 30 August 1942 | Battle of Alam el Halfa | El Alamein | World War II |
| 1942 | St Nazaire Raid | Saint-Nazaire | World War II |
| 1944 | Battle of Debrecen | Nyíregyháza | World War II |
| 1940 | Western Desert campaign | Western Desert | World War II |
| 23 June 1918 | Battle of the Piave River | Piave | World War I |
| 23 May 1915 | Battles of the Isonzo | Soča | World War I |
| 16 November 1914 | Battle of Kolubara | Kolubara | World War I |
| 13 November 1942 | Naval Battle of Guadalcanal | Guadalcanal | Pacific War |
| 1942 | Operation Winter Storm | Volgograd | World War II |
| 1943 | Gran Sasso raid | Hotel Campo Imperatore | World War II |
| 10 August 1904 | Battle of the Yellow Sea | Yellow Sea | Russo-Japanese War |
| 8 March 1944 | Battle of Imphal | Imphal | Pacific War |
| 23 June 1941 | Battle of Brody | Brody | World War II |
| 1943 | Operation Achse | Italy | World War II |
| 7 December 1915 | Siege of Kut | Kut | World War I |
| 1945 | Operation Bodenplatte | Belgium | World War II |
| 1943 | Operation Chastise | Sorpe Reservoir | World War II |
| 13 February 1942 | Channel Dash | English Channel | World War II |
| 1979 | Tajbeg Palace assault | Tajbeg Palace | Soviet-Afghan War |
| 1942 | Battle of Los Angeles | Los Angeles, California | Pacific War |
| 1940 | Japanese invasion of French Indochina | French Indochina | Pacific War |
| 20 August 1914 | Battle of Gumbinnen | Gusev | World War I |
| 1941 | Arctic convoys of World War II | Norwegian Sea | World War II |
| 24 July 1944 | Battle of Tinian | Tinian | Pacific War |
| 1 August 1904 | Siege of Port Arthur | Liaodong Peninsula | Russo-Japanese War |
| 1942 | New Guinea campaign | New Guinea | Pacific War |
| 1944 | Lvov–Sandomierz Offensive | Western Ukraine | World War II |
| 1984 | Operation Moses | Sudan | Jewish people |
| 6 April 1945 | Battle of Königsberg | Königsberg | World War II |
| 6 June 1944 | Battle for Caen | Caen | World War II |
| 1940 | Italian invasion of France | Western Alps | World War II |
| 25 October 1942 | Battle of the Santa Cruz Islands | Santa Cruz Islands | Pacific War |
| 13 June 1944 | Battle of Villers-Bocage | Villers-Bocage | World War II |
| 6 February 1941 | Operation Sonnenblume | Cyrenaica | World War II |
| 24 January 1915 | Battle of Dogger Bank | North Sea | World War I |
| 31 March 1942 | Indian Ocean raid | Indian Ocean | Pacific War |
| 16 April 1945 | Battle of the Seelow Heights | Seelow | World War II |
| 24 July 1920 | Battle of Maysalun | Maysalun | Franco-Syrian War |
| 1945 | Operation Varsity | Wesel | World War II |
| 1950 | Battle of Chamdo | Chamdo | Cold War |
| 1917 | Nivelle Offensive | France | World War I |
| 26 August 1918 | Battle of Baku | Baku | World War I |
| 1941 | Operation Battleaxe | Cyrenaica | World War II |
| 8 November 1936 | Siege of Madrid | Madrid | Spanish Civil War |
| 1944 | Baltic Offensive | Baltic states | World War II |
| 1942 | Scuttling of the French fleet in Toulon | Toulon | World War II |
| 24 August 1942 | Battle of the Eastern Solomons | Solomon Islands | Pacific War |
| 19 February 1942 | Bombing of Darwin | Darwin | Pacific War |
| 18 April 1945 | Ruhr Pocket | Ruhr Region | World War II |
| 3 November 1914 | Battle of Tanga | Tanga | World War I |
| 17 October 1944 | Battle of Leyte | Leyte | Pacific War |
| 21 August 1914 | Battle of Charleroi | Charleroi | World War I |
| February 1943 | Battle of Neretva | Herzegovina | World War II |
| 25 July 1938 | Battle of the Ebro | Ebro | Spanish Civil War |
| 17 November 1917 | Battle of Jerusalem | Jerusalem | World War I |
| 23 August 1914 | Battle of Mons | Mons | World War I |
| 15 September 1944 | Battle of Angaur | Angaur | Pacific War |
| 21 March 1968 | Battle of Karameh | Karameh | War of Attrition |
| 27 October 1938 | Battle of Wuhan | Wuhan | Second Sino-Japanese War |
| 13 May 1940 | Battle of Sedan | Sedan | World War II |
| 1941 | Operation Silver Fox | Sápmi | World War II |
| 1920 | Red Army invasion of Azerbaijan | South Caucasus | Armenian–Azerbaijani War |
| 1947 | Operation Vistula | Bieszczady Mountains | Polish–Ukrainian conflict |
| 7 February 1915 | Second Battle of the Masurian Lakes | Masurian Lake District | World War I |
| 23 September 1940 | Battle of Dakar | Dakar | World War II |
| 2 March 1968 | Battle of Hue | Huế | Vietnam War |
| 1945 | Operation Plunder | North Rhine-Westphalia | World War II |
| 1945 | East Pomeranian Offensive | Pomerania Province | World War II |
| 1941 | Dutch East Indies campaign | Dutch East Indies | Pacific War |
| 10 December 1941 | Sinking of Prince of Wales and Repulse | South China Sea | Pacific War |
| 1937 | Battle of Nanking | Nan-ching | Second Sino-Japanese War |
| 1939 | Battle of Changsha | Changsha | Second Sino-Japanese War |
The 300 most widely documented engagements of the century are listed; the war pages list every placed engagement by date.