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Introduction

World War One Timeline Explanation

  This table contains various events related to the World War One of 1914-1919.
 
The dates are to the nearest day when possible. Those events dated to the nearest year are less certain, naturally, than those dated to the precise day.

World War One Timeline

Event Date Comments

Reinsurance Treaty June 18, 1887 *****
Tirpitz submits plan for seventeen battleship German Navy January 3, 1896
Tangier Crisis March 31, 1905
Algeçiras Conference January - April 7, 1906
Agadir Crisis July 1 - November 4, 1911
Germany agrees to a French protectorate in Morocco in exchange for the cession of French territory in equatorial Africa November 4, 1911
Greece negotiates the purchase of two American battleships June, 1914
Assassination of Francis Ferdinand at Sarajevo June 28, 1914
World War I June 28, 1914
Germany gives Austria-Hungary blank check of support against Serbia July 5/6, 1914
Austrian Ultimatum to Serbia July 23, 1914
Serbia Mobilizes July 25, 1914
Serb reply negatively to Austrian ultimatum July 25, 1914
Austria-Hungary mobilizes against Serbia July 26, 1914
Russian enters 'period preparatory for war' July 26, 1914
Turkey secretly proposes a mutual defense pact with Germany July 27, 1914
Save July 28, 1914
Austria-Hungary declares war on Serbia July 28, 1914
Churchill requisitions two warships being built for Turkey July 28, 1914
Germany demands immediate cessation of Russian mobilization July 29, 1914
Artillery duel at a Serbian bridgehead on the Sava river immediately outside of Belgrade July 29, 1914
Russian orders full mobilization in support of Serbia July 30, 1914
Germany issues ultimatum to Russia July 31, 1914
Turkey mobilizes July 31, 1914
Austria-Hungary orders total mobilization July 31, 1914
German declaration of war on Russia August 1, 1914
Russian cavalry units cross the border of East Prussia August 1, 1914
Germany orders full mobilization August 1, 1914
France orders full mobilization August 1, 1914
Russian mobilization begins August 1, 1914
German ultimatum to Belgium demanding right of passage through Belgian territory August 2, 1914
Germany invades Russian Poland August 2, 1914
Turkey proclaims neutrality August 2, 1914
Turkey signs a secret treaty with Germany August 2, 1914
Luxembourg occupied by German troops August 2, 1914
Britain asks for Turkey's neutrality August 2, 1914
German troops cross into Belgium August 3/4, 1914
Germany declares war on France August 3, 1914
Turkey declares 'armed neutrality' August 3, 1914
France asks Russia to attack Germany August 3, 1914
Turkey begans laying mines in straits in defense of neutrality August 4/5, 1914
Britain declares war on Germany August 4, 1914
Escape of German Cruisers Goeben and Breslau August 4-10, 1914
Goeben and Breslau bombard French ports in Algeria August 4, 1914
United States declares neutrality August 4, 1914
German troops begin full-scale invasion of Belgium August 4, 1914
Frontiers, Battles of the August 5-25, 1914
German Army Zeppelin LZ.6 attempts to bomb Liége August 5/6, 1914
Liége, Battle of August 5-16, 1914 The Germans, under General Emmich with a force of 30,000 men, attacked at night on 5 August, sustaining heavy losses and making little or no progress, much to the surprise of the supremely confident German army.
Austria-Hungary declares war on Russia August 6, 1914
Austria declares war on Russia August 6, 1914
French troops move into Upper Alsace August 6, 1914
Mulhouse, Battle of August 7, 1914
Liége, Surrender of Citadel garrison and city of August 7, 1914
Montenegro declares war on Austria August 8, 1914
Fort de Barchon surrenders, first of 12 forts surrounding Liége to fall August 8, 1914
First elements of BEF arrive in France August 9, 1914
Serbia declares war on Germany August 9, 1914
Austrian forces enter Poland from Galicia August 10, 1914
Galicia, Battle of August 10 - September 4, 1914
Fort d'Évegnée surrenders August 11, 1914
German crusiers Goeben and Breslau enter Dardanelles August 11, 1914
Austrians invade Serbia August 12, 1914
First of two 420mm mortars arrives for use against Liége Forts August 12, 1914
Russia invades East Prussia August 12/13, 1914
Jadar River, Battle of August 12, 1914
Haelen, Battle of August 12, 1914 First cavalry action of the war
Britain declares war on Austria-Hungary August 12, 1914
France declares war on Austria-Hungary August 13, 1914
Forts d'Embourg, de Chaudfontaine, and de Pontisse surrender August 13, 1914
Second of two 420mm mortars arrives for use against Liége Forts August 13, 1914
Forts de Liers and de Fléron surrender August 14, 1914
Lorraine, Battle of August 14-22, 1914 The Invasion of Lorraine - August 14
British Expeditionary Force begins to form up near Le Cateau, France August 14, 1914
Forts de Boncelles, de Loncin, and de Lantin after magazine explodes at Fort de Loncin August 15, 1914
Fort de Hollogne and Fort de Flémalle, last of the forts around Liége, surrender August 16, 1914
Tser and the Jadar, Battle of the August 17–21, 1914 Serbian forces repulsed an Austrian invasion.
Stallupönen, Battle of August 17, 1914 The first German victory on the Eastern Front; General Francois inflicts heavy casualties on Russian advance despite orders from Prittwitz to withdraw.
Tirlement, Battle of August 18/19, 1914
British naval squadron denied entrance to straits August 18, 1914
Ardennes, Battle of the August 20-23, 1914
Gumbinnen, Battle of August 20-23, 1914 Russians defeat German Eighth Army, advance to river Vistula
Brussels, Belgium, surrenders August 20, 1914 General Kluck enters Brussels, Belgium, after Battle of Tirlement, August 18/19, 1914
Charleroi, Battle of August 21-23, 1914
Namur, Siege of August 21-25, 1914 The nine forts surrounding the city of Namur quickly succumb to the German siege train.
Sambre, Battle of the August 22/23, 1914 Battle of the Sambre August 22-23
BEF has five divisions (160,000 men) assembled in France August 22, 1914
Mons August 23, 1914
Japan declares war on Germany August 23, 1914
Mons, Battle of August 23, 1914
Mons, Battle of August 23-24, 1914
Dinant, Capture of August 23, 1914
Namur, Fall of August 23, 1914
Elouges, Action of August 24, 1914
British retreat from Mons; French retreat from Dinant, Charleroi August 24 - September 5, 1914
Solesmes, Rearguard Action of August 25, 1914
Austria-Hungary declares war on Japan August 25, 1914
Maubeuge, Siege of August 25 - September 7, 1914
Komarów, Battle of August 25-27, 1914
Le Cateau August 26, 1914
Le Cateau, Battle of August 26/27, 1914
Tannenberg, Battle of August 26 - September 1, 1914
Lille, German capture of August 27, 1914
Heligoland Bight, Battle of August 27/28, 1914
Guise, Battle of August 29, 1914
Russian General Samsonov commits suicide August 30, 1914
Paris, First German Zeppelin Raid on August 30, 1914
Marne, First Battle of the September 5-10, 1914
U-boat British Scout Cruiser Pathfinder sunk by U-boat September 5, 1914
Joffre's counterattack begins September 5, 1914
Masurian Lakes, First Battle of the September 7 -14, 1914
Lemberg, First Battle of September 8-12, 1914
Drina, First Battle of September 8-17, 1914
Grodek, Battle of September 11, 1914
Aisne, First Battle of the September 14-28, 1914
Moltke replaced by Falkenhayn as Chief of the German General Staff September 14, 1914
Race to the Sea begins (??) September 15, 1914
Przemyśl, Siege of September 16, 1914
Tsingtao, Battle of September 18, 1914
Picardy, Battle of September 22 - 26, 1914
U-9 sinks H.M.S. Aboukir, Hogue and Cressy September 22, 1914
Russians launch an attack on Carpathians passes leading into northern Hungary September 24, 1914
Albert, First Battle of September 25-29, 1914
Orlau-Frankenau, Battle of September 26-28, 1914
Artois, Battle of September 27-October 10, 1914
Antwerp, Siege of September 28 - October 2, 1914
Warsaw Offensive September 28 - October 31, 1914
Turkey closes Dardanelles October 1, 1914
Arras, Battle of October 1-4, 1914
Wirballen, Battle of October 4-8, 1914
Warsaw, Battle of October 9–20, 1914
Ivangorod, Battle of October 9–20, 1914
Race to the Sea begins October 10, 1914
Yser, Battle of the October 18-27, 1914
Belgians flood the twenty-mile strip of land between Dixmude and Nieuport October 27, 1914 Belgians flood the twenty-mile strip of land between Dixmude and Nieuport
Turkey joins Central Powers October 29, 1914 Turkey joins Central Powers
Turkish naval forces begin hostilities against Russia October 29, 1914
Ypres, First Battle of October 31 - November 22, 1914
Coronel, Battle of November 1, 1914
Tanga, Battle of November 3, 1914 Colonel Lettow-Vorbeck defeats British attempt to capture German East Africa
Basra, Capture of November 5, 1914
Przemyśl, Siege of November 10, 1914
Lódz, Battle of November 11–25, 1914
Hungary, Invasion of November 15, 1914 Russians commenced the second investment of Przemysl (Nov. 10) and renewed the invasion of northern Hungary (Nov. 15).
British campaign in Mesopotamia begins November 22, 1914
Qurna, Battle of December 3, 1914
Kolubara River, Battle of December 3–9, 1914 The Austrians were forced to recross the Serbian frontier as Serbs recaptured Belgrade (Dec. 15), ending the second invasion of Serbia.
Limanova, Battle of December 5–17, 1914 Battle of Limanova. The Austrians failed to break the Russian position before Cracow.
Falkland Islands, Battle of the December 8, 1914
Austrians driven out of Serbia December 15, 1914
Scarborough and Hartlepool, German naval bombardment of December 16, 1914
Givenchy, Battle of December 18, 1914
Champagne, First Battle of December 20, 1914
Christmas Truce December 24-26, 1914
Sarikamish, Battle of December 29, 1914 - January 3, 1915
Afiun-Kara-Hissar, Battle of 1915 Battle of Afiun-Kara-Hissar (1915) - World War I - Turkish Assimilation of Armenians
Russia asks Britiish War Office for demonstration against Turkey January 2, 1915
Admiralty asks Admiral Carden about plans for forcing Strait January 3, 1915
South African forces occupy Swakopmund January 14, 1915
Japan's Twenty-one Demands on China January 18, 1915 In a classic act of opportunism, the Japanese government used the distraction of the war in Europe to press China secretly for a series of concessions. It was made clear that if China were to refuse these demands, war with Japan would be the result.
Dogger Bank, Battle of January 24, 1915
William P. Frye sunk January 28 1915
Bolimov, Battle of January 31, 1915
Rumani, Battle of February 2, 1915
Suez Canal, Defence of the February 3, 1915
Germany declares war zone around British Isles February 4, 1915
Masurian Lakes, Second Battle of the February 7, 1915
Singapore Rebellion February 15/16, 1915
Dardanelles, Allied naval attack on the February 19, 1915
Neuve Chapelle, Battle of March 10-13 1915
Dardanelles Narrows, Allied attempt to force March 18, 1915
Turkey moves against Armenians April 1915
Shaiba, Battle of April 11, 1915
Ypres, Second Battle of April 22 - May 25, 1915
Gallipoli, Allied landings at April 25, 1915 Allies land troops at Anzac Cove and Helles
Helles & Anzac Cove, Allied Landing at April 25, 1915
Gallipoli Campaign April 25, 1915 - January 10, 1916
Gorlice-Tarnow Offensive April 28 - August, 1915
Krithia, First Battle of April 28, 1915
Gulflight sunk May 1, 1915
Eski Hissarlik, Counter-attack at May 1, 1915
Krithia, Second Battle of May 6, 1915
Lusitania sunk May 7, 1915
Artois Offensive May 9, 1915
Festubert, Battle of May 15, 1915
Anzac Cove, Turkish attack at May 19, 1915
London, First Zeppelin raid on May 31, 1915
Amara, Capture of May 31, 1915
Krithia, Third Battle of June 4, 1915
Isonzo, 01 First Battle of the June 23, 1915
Isonzo, Eleven Battles of June 23, 1915-September 15, 1918
Nasiriyeh, Battle of June 27, 1915
Gully Ravine, Battle of June 28, 1915
Achi Baba, Attack on July 12, 1915
Isonzo, 02 Second Battle of the July 18, 1915
Sari Bair, Battle of August 6, 1915
Suvla Bay, Landings at August 6, 1915
Lone Pine, Battle of August 6, 1915
Arabic sunk August 19, 1915
Scimitar Hill, Battle of August 21, 1915
Hill 60, Battle of August 21, 1915
Military agreement between German, Austria-Hungary and Bulgaria concluded at Pless September 6, 1915
Bulgaria mobilizes September 23, 1915
Greece mobilizes September 23, 1915
Loos, Battle of September 25, 1915
Champagne, Battle of September 25 - November 6, 1915
Artois-Loos Offensive September 25, 1915 Anglo-French Offensive
Kut-al-Amara, Capture of September 28, 1915
Salonika, Allied troops land at October 5, 1915
Bulgaria joins Central Powers October 15, 1915
Isonzo, 03 Third Battle of the October 18, 1915
Gaza Offensive October 31 - December 9, 1915
Ancona sunk November 7, 1915
Isonzo, 04 Fourth Battle of the November 10, 1915
Ctesiphon, Battle of November 22-25 1915
Wilson calls up reserves December 7, 1915
Kut-al-Amara, Siege of December 7, 1915 - April 29, 1916
Gallipolli, Evacuation of Anzac Cove and Suvla Bay December 10-20, 1915
Gallipolli, Evacuation of Helles December 20, 1915 - January 9, 1916
Sheikh Sa'ad, Battle of January 6, 1916
Germans pledge to abide by submarine rules January 7, 1916
Wadi, Battle of the January 13, 1916
Hanna, Battle of January 21, 1916
Verdun Offensive begins February 21 - July 1916
Dujaila, Battle of March 8, 1916
Isonzo, 05 Fifth Battle of the March 9, 1916
Lake Naroch, Battle of March 18, 1916
HMS Sussex sunk March 24, 1916
Kut, First Battle of April 5, 1916
Sussex pledge May 4, 1916
Asiago, Battle of May 15, 1916
Conscription to the British armed forces began for the first time. May 24 1916
British Grand Fleet leaves Scapa Flow for the Battle of Jutland. May 31, 1916 British Grand Fleet leaves Scapa Flow for the Battle of Jutland.
Jutland, Battle of May 31 - June 1, 1916
Khanaqin, Battle of June 1916
Kovel-Stanislav Offensive June 3 - September 30, 1916
Lutsk, Battle of June 4, 1916
Brusilov Offensive June 4, 1916 A pyrrhic victory for the Russians; a sixty-mile advance which cost a million casusalties
HMS Hampshire sinks off Orkney June 5, 1916 HMS Hampshire sinks off Orkney after striking a mine. Lord Kitchener, conqueror of Sudan, is drowned.
Somme, Battle of July 1 - November 18, 1916
Bazentin Ridge, Battle of July 14-17, 1916
Delville Wood, Battle of July 15 - September 3, 1916
Pozieres Ridge, Battle of July 23, 1916
Romani, Battle of August 3, 1916
Isonzo, 06 Sixth Battle of the August 6, 1916
Gorizia, Battle of August 6, 1916
Rumania, Battle of August 27 - December 6, 1916
Guillemont, Battle of September 3, 1916
Isonzo, 07 Seventh Battle of the September 14, 1916
Flers-Courcelette, Battle of September 15, 1916
Isonzo, 08 Eighth Battle of the October 10, 1916
Isonzo, 09 Ninth Battle of the November 1, 1916
Germany proposes peace talks December 12, 1916
Kut, Second Battle of December 13, 1916
Wilson seeks peace terms from both sides December 20, 1916
Khadairi Bend, Battle of January 9, 1917
Wilson calls for an association of nations and peace without victory January 22, 1917
Germany resumes unrestricted sub warfare February 1, 1917
U.S. breaks diplomatic relations with Germany February 3, 1917
Zimmerman Telegram revealed February 24, 1917
Liner Laconia is Sunk by U-boat February 25, 1917
Nahr-al-Kalek, Battle of February 26, 1917
Wilson arms merchant ships March 9, 1917
Baghdad, Capture of March 11, 1917
American merchant ship Algonquin is sunk by shellfire from submarine March 12, 1917
Samarrah Offensive March 13, 1917
Czar Nicholas II abdicates March 15, 1917
Falluja, Seizure of March 19, 1917
Jebel Hamlin, Battle of March 25, 1917
Gaza, Battle of March 26/27, 1917
Wilson asks for war declaration April 2, 1917
United States declares war on Germany April 6, 1917
Vimy Ridge, Battle of April 9-12, 1917 The Battle of Vimy Ridge was the first successful operation against the German Hindenburg Line during World War I.
Arras Offensive April 9, 1917 Largely a diversionary attack.
Shiala, Battle of April 11, 1917
Aisne, Second Battle of the April 16, 1917
French troops begin a series of mutinies April 17, 1917
Gaza, Battle of April 17-19, 1917
Istabulat, Battle of April 21, 1917
Boot, Battle of the April 30, 1917
Isonzo, 10 Tenth Battle of the May 12, 1917
Otranto Straits, Battle of May 14-15 1917
U.S. Selective Service Act May 18, 1917
Pershing heads AEF May 19, 1917
Messines, Battle of June 7, 1917
Espionage Act passed June 15, 1917
U.S. soldiers arrive in France June 25, 1917
Greece enters the war on the side of the Allies June 27, 1917
Pershing makes first request for army of 1,000,000 men July 2, 1917
Aquaba, Battle of July 6, 1917
T.E. Lawrence heads Arab revolt July 6, 1917
Pershing revises army request figures upwards to 3,000,000 July 11, 1917
Major British offensive launched at Ypres July 31, 1917
Ypres, Third Battle of July 31 - November 6, 1917
Isonzo, 11 Eleventh Battle of the August 19, 1917
Germany takes the northernmost end of the Russian front in the Riga offensive September 1, 1917
Ramadi, Battle of September 28, 1917
Passchendaele, British Offensive at October 12, 1917
Caporetto, Battle of October 24 - November 7, 1917
Lansing-Ishii Agreement November 2, 1917
Tikrit, Capture of November 5, 1917
Bolshevik Revolution in Russia November 6, 1917
Austria-Germany breakthrough at Caporetto on Italian front October 24, 1917
Bolshevik Revolution in Russia results in Communist government under Lenin taking office November 7, 1917
Balfour Declaration November 8, 1917
Mughar Ridge, Battle of November 13, 1917
Cambrai, Battle of November 20, 1917 British launch surprise tank attack at Cambrai: another failure
United States declares war on Austria-Hungary December 7, 1917
Jerusalem, Battle of December 8/9, 1917
Jerusalem, Capture of December 9, 1917 Jerusalem captured by British forces under Allenby
Russia opens separate peace negotiations with Germany (Brest-Litovsk) December 22, 1917
President Woodrow Wilson's Fourteen Points January 8, 1918
Series of collisions in the Firth of Forth involving submarines and surface ships January 31, 1918 "Battle of Isle of Mey" - 100 men died in a series of collisions in the Firth of Forth, involving submarines and surface ships.
Treaty of Brest-Litovsk March 3, 1918 By the the war with Russia is ended. Russia renounces any authority in Poland and the Baltic states and acknowledges the independence of Ukraine and Finland. The Central powers do not demand reparations.
Brest-Litovsk, Treaty of March 3, 1918
Somme Offensive March 21 - April 6, 1918
Lys, Battles of the April 9-29, 1918
Estaires, Battle of April 9-22, 1918
Lys River, Battle of April 9-29, 1918
Messines, Battle of April 10/11 1918
Hazebrouck, Battle of April 12-15, 1918
Bailleul, Battle of April 13-15, 1918
Kemmel, First Battle of April 17-19, 1918
Bethune, Battle of April 18, 1918
Zeebrugge Raid April 23, 1918
Kemmel, Second Battle of April 25/26, 1918
Scherpenberg, Battle of the April 29, 1918
Aisne May 27 - June 6, 1918
Aisne, Third Battle of May 27, 1918
Cantigny, Battle of May 28, 1918
Allied Expedition to Vladivostok June, 1918 - January, 1920
Château-Thierry, Battle of June 3, 1918
Belleau Wood, Battle of June 6 - July 1, 1918
Piave River, Battle of the June 15, 1918
La Becque, Action of June 28, 1918
Marne, Second Battle of the July 15 - August 6, 1918
Allied Expedition to Archangel - U.S. Intervention in Russia July 17, 1918 - September 27, 1919
Meteren, Capture of July 19, 1918
Soissonnais and of the Ourcq, Battle of the July 23 - August 2, 1918
Amiens August 8-11, 1918
Amiens Offensive August 8, 1918
Outtersteene Ridge, Action of August 18 - September 6, 1918
Albert August 21-3, 1918
Polar Bear Expedition arrives in Vladivostok August 21, 1918
Albert, Second Battle of August 21, 1918 Allied breakthrough
Scarpe, Battle of the August 26-30, 1918
Havrincourt, Battle of September 12, 1918
Havrincourt September 12, 1918
Saint Mihiel Offensive September 12, 1918
Epehy, Battle of September 18, 1918
Damascus, Battle of September 19 - October 1, 1918
Megiddo, Battle of September 19-21, 1918
Meuse-Argonne, Battle of September 26 - November 11, 1918 Allied victory over the Germans Decisive battle
Cambrai-St Quentin, Battle of September 27, 1918
Ypres, Battle of September 28 - October 2, 1918
Artois, Final Advance in October 2 - November 11, 1918
Hindenburg Line captured by Allied forces October 6, 1918
Passenger ship Leinster torpedoed with heavy loss of life October 12, 1918
Selle, Battle of the October 17-25, 1918
Vittorio Veneto, Battle of October 24 - November 3, 1918
German High Seas Fleet begins its final sortie October 29, 1918
Sharqat, Battle of October 29, 1918
Kiel Mutiny October 30 - November 9, 1918 The Mutiny became an outright revolt on November 9, 1918.
Valenciennes, Battle of the November 1/2, 1918 This action included the Tactical Incident of the Capture of Mont Houy by the 4th Canadian Division.
German Invasion of Rhodesia November 2-14, 1918
Austro-Hungarian Armistice November 3, 1918
Kiel Mutiny November 3, 1918
Proclamation of Polish Republic November 3, 1918
Sambre, Battle of the November 4, 1918
British Occupation of Armenia November 4-December 27, 1918
Grand Honelle, Passage of the November 5-7, 1918 The Passage of the Grand Honelle
Allied Acceptance of the Fourteen Points November 5, 1918
Serb-Croat-Slovene Union November 7, 1918
Munich Revolution/Bavarian Republic November 7-8, 1918
Compiegne/German Armistice November 8, 1918
Abdication of Kaiser Wilhelm II of Germany November 9, 1918
Toulgas, Battle of November 11, 1918
Mons, Capture of November 11, 1918
German High Seas Fleet surrenders November 21, 1918
Trianon, Treaty of June 4, 1920
Sèvres, Treaty of August 10, 1920

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