Italians capture Cappuccio Wood.
Italian
First Battle of the Piave: the Austro-Hungarians and Germans try unsuccessfully to cross the river.
Battle of Gravenstafel, First stage of the Second Battle of Ypres.
Western
The German Foreign Secretary Arthur Zimmermann sends a telegram to his ambassador in Mexico, instructing him to propose to the Mexican government an alliance against the United States.
Politics
France and the United Kingdom declare war on the Ottoman Empire.
The Germans occupy Vilnius. The Gorlice-Tarnów Offensive ends.
Eastern
Battle of Rumbo.
African
Austria-Hungary declares war on Russia.
Sultan Mehmed V declares Jihad on the Allies.
Battle of Drina.
Balkan
The Canadians obtain a significant victory in the Battle of Vimy Ridge, part of the first phase of the Second Battle of Arras.
Battle of Sarrebourg, a phase of the Battle of Lorraine.
At 6 am, Germany signs the Armistice of Compiègne. End of fighting at 11 a.m..
United Kingdom: Prime Minister Henry Asquith resigns and is succeeded by David Lloyd George.
Battle of St. Quentin Canal, a phase of the Hundred Days Offensive.
Battle of Turtucaia, a phase of the conquest of Romania.
Battle of Epehy, a phase of the Hundred Days Offensive.
The Arab Revolt in Hejaz begins.
Battle of Thiepval Ridge (part of the final stages of the Battle of the Somme)
Second Battle of the Piave: the Austro-Hungarian offensive is repelled.
Austro-Hungarian offensive against Montenegro, which capitulates.
Battle of Rosieres, a phase of Operation Michael.
Third Battle of Artois.
Second Battle of Noyon, a phase of the Hundred Days Offensive.
Troops from Hungary rout the Russians at Jarosław. Lviv is again in Austrian hands.
Italy and Russia declare war on Bulgaria.
Battle of Broodseinde (part of the final phases of the Battle of the Third Battle of Ypres).
In some sectors of the Western Front, an unofficial Christmas truce is observed between German and British forces.
Austria-Hungary declares war on Serbia. Russia mobilizes.
The Siege of Przemyśl begins
The Austro-Hungarians re-enter Lviv.
Second Battle of the Cerna Bend, a phase of the Allied Spring Offensive.
Action of Elouges.
The Allies agree to establish a Supreme War Council at Versailles.
Proposal to create the League of Nations accepted.
Togoland is divided into British and French administrative zones.
Bergmann Offensive, first military engagement in the Caucuses of the First World War.
Caucasian
Corfu Declaration about the future Kingdom of Yugoslavia.
Germany invades Belgium
Battle of Serre, a phase of the Hundred Days Offensive.
Austro-Hungarian defeat at the Battle of Rava Russka, a phase of the Battle of Lemberg.
League of Nations headquarters moved to Geneva, Switzerland.
British and French capture La Boisselle during the Second Battle of Albert.
Battle of Bucharest, a phase of the conquest of Romania.
Battle of San Matteo.
Battle of Agagia, Senussi rebellion suppressed by the British.
Conquest of Romania by Central Powers.
First Battle of Kemmelberg, a phase of Operation Georgette.
Vardar Offensive, final offensive on the Balkan Front.
Germany suspends unrestricted submarine warfare.
Naval
Battle of Rarancza.
Battle of Skra-di-Legen
Battle of Neuve Chapelle. After an initial success, a British offensive is halted.
Battle of Hill 60, part of the August Offensive.
Gallipoli
Arab rebels led by Lawrence of Arabia seize the Jordanian port of Aqaba.
Battle of Nebi Samwil, a phase of the Battle of Jerusalem.
Action at Nery
Second Battle of Krithia. The Allied attempts at advancing are thwarted again.
First Battle of Gaza. The British attempt to capture the city fails.
Battle of Jugla.
Battle of Haelen, a phase of the Battle of the Frontiers.
Battle of Givenchy.
Battle of the Sambre, closing phase of the Hundred Days Offensive.
Troops from South Africa begin invading German South-West Africa.
Battle of Arleux, part of the Second phase of the Second Battle of Arras.
British capture Deraa during the Capture of Damascus.
Battle of Kraśnik, a phase of the Battle of Lemberg. The Austro-Hungarian First Army defeats the Russian Fourth Army.
11 days after agreeing a cease-fire, General von Lettow-Vorbeck formally surrenders his undefeated army at Abercorn in present-day Zambia.
Battle of Kondoa Irangi.
Battle of Courtrai, closing phase of the Hundred Days offensive.
Battle of Malka Nidzhe, a phase of the Monastir Offensive.
Battle of Nazareth, a phase of the Battle of Sharon.
Battle of Taif.
First phase of the Spring Offensive, Operation Michael (aka Second Battle of the Somme). The Germans obtain a Pyrrhic victory.
Battle of Chateau-Thierry, a phase of the Second Battle of the Marne.
Reinhard Scheer is appointed commander of Germany's Hochseeflotte.
Second phase of the Spring Offensive, Operation Georgette (aka Battle of the Lys). The results are disappointing for the Germans.
Morava Offensive, a phase of the Central Powers Invasion of Serbia, Bulgarians break through Serbian lines.
The German fleet shells Scarborough and Hartlepool, England.
Russia signs a preliminary armistice with Germany.
The Russians leave Przemyśl.
Battle of Buqqar Ridge.
The Ottomans fail to capture the Suez Canal.
First Battle of Messines.
First successful heavy bomber raid on London done by the Gotha G.IV.
Air
Second Battle of Cambrai (aka Battle of Cambrai (1918)), a phase of the Battle of the Hindenburg Line.
Battle of Mughar Ridge.
Battle of Tsingtao: British and Japanese forces capture the German-controlled port of Tsingtao in China.
The Paris Peace Conference ends.
Second Battle of Kut. The British recapture the city.
Battle of Mulhouse, a phase of the Battle of the Frontiers.
Wilhelm Groener replaces Erich Ludendorff as Hindenburg's deputy.
The French recapture Fort Douaumont near Verdun.
Battle of Samakh, a phase of the Battle of Sharon.
Battle of Kowel.
Battle of Mont Saint-Quentin, a phase of the Second Battle of the Somme.
Lake Naroch Offensive.
The Central Powers create a unified command.
Battle of Abaran, a phase of the invasion of Armenia.
Battle of Sharon, a phase of the Battle of Megiddo.
Germans capture Kiev.
Battle of Sari Bair, part of the August Offensive. Last and unsuccessful attempt by the British to seize the Gallipoli peninsula.
First Battle of Monte Grappa, Austro-Hungarian offensive halted.
Allied forces land on Gallipoli, landing at Anzac Cove and Cape Helles.
Battle of Cocos, northeast Indian Ocean. The Australian cruiser Sydney destroys the German cruiser Emden.
Battle of the Hohenzollern Redoubt, a phase of the Battle of Loos.
Second Battle of Oituz.
First Battle of Artois.
Battle of Revigny, a phase of the First Battle of the Marne.
Battle of Festubert.
Battle of Lagnicourt, part of the Second phase of the Second Battle of Arras.
Battle of Mahiwa.
The Germans attack the Russians in East Prussia, the Battle of Gumbinnen. The attack is a failure in addition to being a deviation from the Schlieffen Plan.
Austria proclaimed a republic.
Battle of the Vistula River, aka Battle of Warsaw.
Bulgaria signs an armistice with the Allies.
Battle of Dobrich, a phase of the conquest of Romania.
Germany ratifies the Treaty of Versailles.
Battle of Mecca, Arabs capture the city.
Battle of Ancre Heights (part of the final stages of the Battle of the Somme).
Battle of Hamel.
Battle of Mojkovac
British capture Trônes Wood during the Second Battle of Albert.
French Marshall Ferdinand Foch is appointed Supreme Commander of all Allied forces.
Second Battle of Bapaume, a phase of the Second Battle of the Somme.
Windhoek, capital of German South-West Africa, is occupied by South African troops.
Second Battle of Kemmelberg, a phase of Operation Georgette.
Kosovo Offensive, a phase of the Central Powers invasion of Serbia, Serbians pushed into Albania.
The Russian offensive in the Carpathians begins. It will continue until April 12.
Germany and the Ottoman Empire sign a secret alliance treaty.
Battle of Kara Killisse.
Philippe Pétain replaces Robert Nivelle as Commander-in-Chief of the French Army.
The October Revolution begins in Russia. The Bolsheviks seize power.
Japan declares war on Austria-Hungary.
Battle of Shaiba.
Treaty of Versailles signed.
Battle of Behobeho.
Von Lettow-Vorbeck's German colonial forces defeat the British at the Battle of Tanga, German East Africa.
Battle of Kiawe Bridge.
The United States declares neutrality.
Battle of Sharqat.
First Battle of the Marne. The German advance on Paris is halted, marking the failure of the Schlieffen Plan.
The League of Nations holds its first general assembly.
The United States of America declares war on Germany.
The Serbs defeat the Austro-Hungarians at the Battle of Cer.
Advance to the Meuse.
Prunaru Charge, a phase of the Battle of Bucharest, Romanian cavalry desperately charge into enemy lines.
Fifth Battle of the Isonzo.
Italy declares war on Germany.
Second Battle of Villers-Bretonneux, a phase of Operation Georgette.
The Allies (French and Serbs) break through the Bulgarian lines at Dobro Polje, a phase of the Vardar Offensive.
Battle of Jutland between Britain's Grand Fleet and Germany's Hochseeflotte.
British begin their assault on Jericho.
Germany interferes in the Caucuses.
Battle of Kosturino
Artillery bombardment of Paris.
Sventiany Offensive, a phase of the Gorlice-Tarnow Offensive.
Battle of Ngomano, the Germans invade Portuguese East Africa to gain supplies.
Battle of Frezenberg Ridge, Part of the Second Battle of Ypres.
Australians attack Noreuil.
France declares war on Bulgaria.
Assassination of Archduke Franz Ferdinand of Austria, heir to the Austro-Hungarian throne, who was killed in Sarajevo along with his wife Duchess Sophie by Bosnian Serb Gavrilo Princip.
Battle of Lorraine, a phase of the Battle of the Frontiers.
Battle of the Menin Road Ridge (Intermediate phase of the Third Battle of Ypres).
Fighting begins at Perthes.
Battle of Flirey
Second Battle of Bullecourt, part of the second phase of the Second Battle of Arras.
Charge at Irbid, a phase of the Capture of Damascus.
Japan declares war on Germany.
Kingdom of Serbs, Croats and Slovenes proclaimed.
Robert Nivelle replaces Joseph Joffre as Commander-in-Chief of the French Army.
Skirmish at Joncherey, first military action on the Western Front
Battle of Mont-D'Origny, a phase of the Hundred Days Offensive.
Battle of Flers-Courcelette (last offensive of the Battle of the Somme). The British use armored tanks for the first time in history.
Capture of Jenin, a phase of the Battle of Sharon.
Battle of Erzincan.
The Battle of the Somme ends with enormous casualties and no winner.
Hundred Days Offensive, last offensive on Western Front.
Trebizond Campaign.
Third Battle of Messines, a phase of Operation Georgette.
The United Kingdom declares war on Bulgaria.
Battle of Savy-Dallon, a phase of the Hundred Days Offensive.
Woodrow Wilson outlines his Fourteen Points.
Battle of Manzikert.
Third Battle of Gaza. The British break through the Ottoman lines.
Germany begins unrestricted submarine warfare against merchant vessels.
Battle of the Yser. French and Belgian forces secure the coastline of Belgium.
Battle of Lone Pine, part of the August Offensive.
Greece declares war on the Central powers.
Battle of Ayun Kara.
The Royal Navy wins the First Battle of Heligoland Bight, North Sea.
Conference of Sanremo, Italy, about League of Nations mandates in former Ottoman territories of the Middle East.
The British capture Baghdad.
Eleventh Battle of the Isonzo.
Montenegro declares war on Germany.
Battle of Valenciennes, closing phase of the Hundred Days Offensive.
Theobald von Bethmann Hollweg lays out Germany's war aims.
The British capture Tiberias during the Battle of Sharon.
Sixth Battle of the Isonzo. The Italians capture Gorizia (August 9).
Battle of Drocourt-Queant Line, final phase of the Second Battle of the Somme.
Easter Rising by Irish rebels for independence from the United Kingdom.
Battle of Ginchy (intermediate phase of the Battle of the Somme)
Ottomans invade Armenia.
Battle of Tabsor, a phase of the Battle of Sharon.
Battle of the Boar's Head, diversion from the Battle of the Somme which began the next day.
German artillery bombard the Americans at Rouge Bouquet.
Champagne-Marne Offensive (consisting of the Fourth Battle of Champagne and the Battle of the Mountain of Reims), a phase of the Second Battle of the Marne. last phase of the Spring Offensive and last German offensive of World War I.
First Battle of Krithia. The Allied advance is repelled.
Battle of Es Sinn.
Second Battle of Langemarck (Initial phase of the Battle of Third Battle of Ypres).
Battle of Qurna.
First Battle of the Masurian Lakes: The Russian Army of the Neman withdraws from East Prussia with heavy casualties.
Italy declares war on Austria-Hungary.
Battle of the Hills (aka Third battle of Champagne), a diversion to the Second Battle of the Aisne.
Battle of Wadi Musa.
Battle of Charleroi, a phase of the Battle of the Frontiers.
First Zeppelin raid on Great Britain.
German U-boats interned.
First Battle of Arras.
Second Battle of Messines, The British recapture Messines Ridge.
Charge at Kiswe, a phase of the Capture of Damascus.
Battle of Le Cateau. Allied retreat.
A Banquet in Honour of The President of the French Republic was hosted by King George V and held at Buckingham Palace during the evening hours of November 10. The very first Armistice Day was held on the Grounds of Buckingham Palace on the Morning of November 11. This would set the trend for a day of Remembrance or Remembrance Day for decades to come.
The Siege of Medina begins.
Battle of Aleppo.
First Battle of the Cerna Bend, a phase of the Monastir Offensive.
Battle of Erzurum.
Battle of Bazentin Ridge (Initial phase of the Battle of the Somme)
Third Battle of Arras (aka First Battle of Arras (1918)), a phase of Operation Michael.
Battle of Baku, last Turkish offensive of the war.
Battle of Dujaila: a British attempt to relieve Kut failed.
Second Transjordan attack on Shunet Nimrin and Es Salt.
Battle of Ctesiphon, in present-day Iraq.
Battle of Hartmannswillerkopf, series of battles fought to control the peak.
Germans capture Zhytomyr.
Italy declares its neutrality.
Second Battle of the Isonzo.
Charge at Huj.
The Second Battle of Ypres, which ends in a stalemate. Germany first uses the poison gas.
British raid the Ancre.
Montenegro declares war on the Ottoman Empire.
The Third Battle of Ypres (aka Battle of Passchendaele) begins.
The Ottoman Empire closes the Dardanelles.
Battle of Basra.
SecondBattle of Monte Grappa, beginning phase of Vittorio Veneto.
Battle of the Two Morins.
First Battle of the Scarpe, part of the first phase of the Second Battle of Arras.
Battle of Morhange, a phase of the Battle of Lorraine.
Austria-Hungary: Kaiser Charles I abdicates.
Battle of the Arges, a phase of the Battle of Bucharest.
Fifth Battle of Ypres (aka Advance on Flanders), a phase of the Battle of the Hindenburg Line.
Paul von Hindenburg replaces Erich von Falkenhayn as German Chief of Staff.
Third Battle of Doiran, a phase of the Vardar Offensive, The Bulgarians halt the British and Greek advance.
The Brusilov Offensive begins.
The British capture Jericho.
Battle of Morval (part of the final stages of the Battle of the Somme)
Fourth phase of the Spring Offensive, Operation Gneisenau (aka Battle of Matz). Despite substantial territorial gains, the Germans do not achieve their strategic goals
Douglas Haig replaces John French as commander of the British Expeditionary Force.
First Battle of Noyon, a phase of Operation Michael.
Nicholas II removes Grand Duke Nicholas Nikolayevich as Commander-in-Chief of the Russian Army, personally taking that position.
The United States declares war on Austria-Hungary.
Battle of Aubers Ridge, a phase of the Second Battle of Artois.
Third Battle of the Isonzo
Battle of Ramadi, Mesopotamia.
Fighting begins at Noyon.
Austria-Hungary sends an ultimatum to Serbia. The Serbian response is seen as unsatisfactory.
First Battle of Picardy.
First Battle of the Isonzo.
Allied Spring offensive on the Salonika Front.
The Germans besiege and capture the Maubeuge Fortress.
Balfour Declaration: the British government supports plans for a Jewish "national home" in Palestine.
Treaty of Versailles between the Allies and Germany: the Peace Conference opens in Paris.
Battle of Magdhaba in the Sinai peninsula.
Russia declares war on the Ottoman Empire.
The Germans besiege and then capture the fortresses of Liège, Belgium.
Battle of Lys and Escaut (Which included the Second Battle of Lys and the Battle of the Escaut), a phase of the Hundred Days Offensive.
The Brusilov Offensive ends with a substantial Russian success.
Gabriele D'Annunzio proclaims in Fiume the Italian Regency of Carnaro.
British and French capture Mametz Wood during the Second Battle of Albert.
HMHS Britannic sinks after hitting a German mine
Battle of Montdidier.
The Battle of Verdun begins.
Battle of Mlali.
Battle of Bailleul, a phase of Operation Georgette.
Battle of Havrincourt, a phase of the Hundred Days Offensive.
The Central Powers signed an exclusive protectorate treaty with the Ukrainian People's Republic as part of the negotiations that took place in Brest-Litovsk.
Mackensen breaks again through the Russian lines in the Lviv area.
Battle of Cantigny.
British and French naval attack on the Dardanelles. The Gallipoli Campaign begins.
Battle of the Nek, a phase of the August Offensive.
Battle of Zborov, a phase of the Kerensky Offensive.
Second Battle of Heligoland Bight, North Sea.
New Zealand occupies German Samoa (later Western Samoa).
Troops withdraw from Anzac Cove.
Treaty of Sèvres between the Allies and the Ottoman Empire. The treaty is not recognized by the Turkish national movement, which considers the Istanbul government illegitimate.
Russia: Czar Nicholas II abdicates. A provisional government is appointed.
Operation Albion. German capture of Oesel, Dago and Moon Islands.
France declares war on Austria-Hungary.
Austria-Hungary signs the armistice with Italy, effective November 4.
The First Battle of the Aisne ends in a substantial draw. The Race to the Sea begins.
Second Battle of Scarpe, part of the second phase of the Second Battle of Arras.
The British enter Damascus.
Battle of Tannenberg: the Russian army undergoes a heavy defeat by the Germans.
The Germans evacuate Luxembourg.
The British forces under siege at Kut surrender to the Ottomans, first siege of Kut ends.
Battle of Kaymakchalan, a phase of the Monastir Offensive.
Third Battle of the Aisne (aka Operation Blücher-Yorck, third phase of the Spring Offensive). After initial gains, the German advance is halted.
Battle of Tulkarm, a phase of the Battle of Sharon.
British capture Fricourt during the Second Battle of Albert.
Battle of Tell 'Asur.
Battle of Soissons,a phase of the Second Battle of the Marne.
Battle of Hanna, a phase of the First Siege of Kut.
Battle of the Avre, final phase of Operation Michael.
Ovche Pole Offensive, a phase of the Central Powers invasion of Serbia, Bulgarians break through Serbian lines.
Hill 60 captured by the Germans.
The Russian Great Retreat from Poland and Galicia.
Second Battle of Doiran.
Battle of Lemberg. The Russians capture Lviv.
Second Battle of Passchendaele (Closing phase of the Third Battle of Ypres).
Battle of Dogger Bank between squadrons of the British Grand Fleet and the German Hochseeflotte.
Battle of La Bassee.
Greece: King Constantine I abdicates.
Pursuit to Haritan.
British and French forces conquer Togoland, a German protectorate in West Africa.
Free City of Danzig established.
The Germans withdraw to the Hindenburg Line.
Battle of the Frontiers. The Germans obtain a victory against the British Expeditionary Force and France's Fifth Army.
State of Slovenes, Croats and Serbs proclaimed.
Second Battle of Cobadin, a phase of the conquest of Romania.
Battle of Wadi, a phase of the First Siege of Kut.
Battle of Haifa, a phase of the Battle of Sharon.
Battle of Pozières (Initial phase of the Battle of the Somme)
Fourth Battle of the Scarpe (aka Battle of the Scarpe (1918)), a phase of the Fourth Battle of Arras.
Battle of Latema Nek.
Battle of Kaniow.
Battle of Lake Tanganyika.
Battle of Nablus, a phase of the Battle of Meggido.
Germans capture Pskov and Narva.
The Germans occupy Warsaw.
The Third Battle of Ypres (aka Battle of Passchendaele) ends in a stalemate.
Battle of St Julien, part of the Second Battle of Ypres.
Fao Landing, British and Indians besiege the fortress at Fao.
Second Battle of Champagne.
Battle of Mărăşeşti.
Battle of Kolubara, Austro-Hungarians leave Serbia.
Battle of the Marshes of Saint-Gond, a phase of the First Battle of the Marne.
First Battle of Bullecourt,part of the first phase of the Second Battle of Arras.
First Battle of Passchendaele (part of the final phases of the Third Battle of Ypres).
The Germans occupy Brussels.
Poland proclaimed.
The Germans besiege and capture Antwerp, Belgium.
Battle of Saint-Thierry (Initial phase of the Meuse-Argonne Offensive).
Battle of Guillemont (intermediate phase of the Battle of the Somme)
Battle of Megiddo. The British conquer Palestine.
The HMS Hampshire is sunk off the Orkney Islands; Lord Kitchener dies.
Flamanda Offensive, a phase of the conquest of Romania.
Battle of Moreuil Wood.
Battle of Sheikh Sa'ad, a phase of the First Siege of Kut.
Allies capture Contalmaison during the Second Battle of Albert.
Action of Khan Baghdadi.
Second Battle of the Somme(aka Third battle of the Somme), a phase of the Hundred Days Offensive.
Armistice called at Gallipoli to bury the dead.
A French army lands in Salonika and, with the help of British and Italian troops, sets up a Balkan Front.
Battle of Poelcappelle (part of the final phases of the Battle of the Third Battle of Ypres).
Battle of Ardahan.
Germany warns Russia to stop mobilizing. Russia says mobilization is against Austria-Hungary only.
First Battle of Albert
The British win the Battle of Gully Ravine.
Tenth Battle of the Isonzo.
Charge at Sheria.
Battle of the Mortagne, a phase of the Battle of Lorraine.
First Battle of Woevre.
German High Seas Fleet (53 ships) scuttled in Scapa Flow with nine deaths, the last casualties of the war.
Grigori Rasputin, Russia's éminence grise, is assassinated.
The United Kingdom begins the naval blockade of Germany.
Battle of Marasti
Britain protests the violation of Belgian neutrality, guaranteed by a treaty; German Chancellor replies that the treaty is just a chiffon de papier (a scrap of paper). The United Kingdom declares war on Germany.
Germany suspends submarine warfare.
Battle of Grand Couronne, a phase of the Battle of the Frontiers.
Treaty of Rapallo between Italy and Yugoslavia. Zadar is annexed by Italy and the Free State of Fiume is established.
Battle of Kostiuchnowka.
Second Battle of Guise, a phase of the Battle of Sambre.
David Beatty replaces John Jellicoe as commander of the Grand Fleet. Jellicoe becomes First Lord of the Sea.
German Kamerun (Cameroon) surrenders.
Battle of Transylvania, a phase of the conquest of Romania.
Battle of Bethune, a phase of Operation Georgette.
Battle of Vauxaillon, a phase of the Hundred Days Offensive.
Austro-Hungarian Strafexpedition in Trentino.
Operation Faustschlag, last offensive on Eastern Front.
Battle of Belleau Wood, part of the German Spring Offensive.
The Siege of Przemyśl ends. The Russians capture the fortress.
The Battle of St. Quentin, first phase of Operation Micheal and of the Spring Offensive.
Scimitar Hill, a phase of the August Offensive.
First Battle of Cambrai. A British attack fails and the battle results in a stalemate.
The British liner Lusitania is sunk by a German U-boat.
Stalemate in Southern Palestine.
First Battle of Champagne.
Russia: General Kornilov's coup attempt fails.
The United Kingdom declares war on Austria-Hungary.
Battle of Thierache, a phase of the Battle of Sambre.
Erich von Falkenhayn replaces Helmuth von Moltke the Younger as German Chief of Staff.
Series of mutinies in the French army.
Battle of Somme-Py (Initial phase of the Meuse-Argonne Offensive).
Battle of Mons, a phase of the Battle of the Frontiers.
The Germans evacuate Belgium.
The Germans occupy Bucharest. The capital of Romania moved to Iaşi.
Germany invades Luxembourg.
Battle of Montfaucon (intermediate phase of the Meuse-Argonne Offensive).
Seventh Battle of the Isonzo
British capture both Afulah and Beisan during the Battle of Sharon.
The Battle of the Somme begins.
First Transjordan attack on Amman.
Battle of the Ancre (closing phase of the Battle of the Somme)
Battle of Tardenois, a phase of the Second Battle of the Marne.
Conscription introduced in the United Kingdom by the Military Service Act.
Battle of Estaires, first phase of Operation Georgette.
Bulgaria declares war on Serbia
Battle of Jaffa, a phase of the Battle of Jerusalem.
Third Battle of Krithia. Yet another Allied failure.
Italy: Vittorio Emanuele Orlando succeeds Paolo Boselli as Prime Minister.
Battle of Bolimov. First German use of chemical weapons.
Battle of Krithia Vineyard, part of the August Offensive.
Battle of Armentieres.
First American troops land in France.
France: Paul Painlevé is replaced by Georges Clemenceau as Prime Minister.
Battle of Étreux.
A plebiscite returns Northern Schleswig to Denmark.
Arz von Straussenberg replaces Conrad von Hötzendorf as Austro-Hungarian Chief of Staff.
The British Expeditionary Force arrives in France.
The Ottoman Empire signs the Armistice of Mudros.
Ninth Battle of the Isonzo.
Second Battle of Amman, a phase of the Third Transjordan Attack.
Battle of Romani. Ottoman attack on the British in the Sinai peninsula fails.
Battle of Peronne, a phase of the Battle of Mont Saint-Quentin.
Battle of Kahe.
Battle of Kisaki.
Battle of Sardarabad, a phase of the invasion of Armenia.
Third Transjordan attack, a phase of the Battle of Nablus.
At Brest-Litovsk, Leon Trotsky signs the peace treaty with Germany.
Allies land at Suvla Bay, a phase of the August Offensive.
Second Battle of the Marne and last German offensive on the Western Front, which fails when the Germans are counterattacked by the French.
London Pact between the Entente and Italy.
Battle of Loos, a major British offensive, fails.
Battle of Hill 70 (Initial phase of the Battle of Third Battle of Ypres).
Battle of Limanowa.
Battle of Vitry, a phase of the First Battle of the Marne.
Battle of Konary.
The Second Battle of the Aisne (aka Nivelle Offensive) ends in disaster for both the French army and its commander Robert Nivelle.
Battle of La Malmaison, delayed French attack on the Chemin des Dames.
Battle of the Ardennes, a phase of the Battle of the Frontiers.
3 days after the armistice, fighting ends in the East African theater when General von Lettow-Vorbeck agrees a cease-fire on hearing of Germany's surrender.
Battle of Rufiji Delta, German cruiser Königsberg destroyed.
Operation Hush, British attempt to capture coast of Belgium fails.
Charge at Kaukab, a phase of the Capture of Damascus.
Battle of Gnila Lipa, a phase of the Battle of Lemberg.
The United Kingdom ratifies the Treaty of Versailles.
Italy: Paolo Boselli succeeds Antonio Salandra as Prime Minister.
Battle of Le Transloy (part of the final stages of the Battle of the Somme)
Battle of Abu Tellul.
The Gallipoli Campaign ends in an Allied defeat and an Ottoman victory.
Battles for Longueval and Delville Wood (Initial phase of the Battle of the Somme)
First Battle of Amman, a phase Of The First Transjordan Attack.
Third Battle of Albert, opening phase of the Second Battle of the Somme.
Battle of Bitlis.
Battle of Scherpenberg, final phase of Operation Georgette.
Fourth Battle of the Isonzo
Battle of Jassin.
Germany declares war on Russia.
The German forces in South-West Africa surrender.
Battle of Mount Hermada in the Karst.
Armando Diaz replaces Luigi Cadorna as Commander-in-Chief of the Italian Army.
Battle of Komarow, part of the Battle of Lemberg.
The Ottomans besiege the Armenian city of Van.
Battle of Rafa. The British drive the Ottomans out of Sinai.
Battle of Kilimanjaro.
Montenegro declares war on Austria-Hungary.
Battle of Pilckem Ridge (Opening phase of the Third Battle of Ypres).
Battle of Łódź (aka Silesian Offensive).
Battle of Vittorio Veneto. The Austro-Hungarian army is routed. The Italians enter Trent and land at Triest.
Battle of the Ourcq, a phase of the First Battle of the Marne.
Second Battle of Arras. The British attack a heavily fortified German line without obtaining any strategic breakthrough.
The Russian army enters East Prussia. Battle of Stalluponen.
Germany: Kaiser William II abdicates; republic proclaimed.
Allies capture Yanbu.
Germany resumes unrestricted submarine warfare.
Battle of Jisr Benat Yakub, a phase of the Capture of Damascus.
Romania enters the war on the Entente's side. Her army is defeated in a few weeks.
Battle of the Hindenburg Line, a phase of the Hundred Days Offensive. The Allies break through the German lines.
Battle of Mont Sorrel.
Germans capture Minsk.
Action of Arsuf.
The First Siege of Kut, Mesopotamia, by the Ottomans begins.
First Battle of Bapaume, a phase of Operation Michael.
Battle of El Burj, a phase of the Battle of Jerusalem.
Second Battle of Artois.
Battle of Krivolak, start of the set up of the Salonika Front.
Battle of Polygon Wood (Intermediate phase of the Battle of the Third Battle of Ypres).
The Russians win the Battle of Sarikamis, Caucasia.
Austria-Hungary seeks German support for a war against Serbia in case of Russian militarism. Germany gives assurances of support.
Battle of Zanzibar, German naval victory.
Third battle of the Scarpe, part of the second phase of the Second Battle of Arras.
Battle of the Canal du Nord, a phase of the Battle of the Hindenburg Line.
Battle of Tel el Khuweilfe.
The Allied Great Retreat to the River Marne.
Fakhri Pasha surrenders at Medina.
Christmas Battles.
Battle of Coronel. Von Spee's German cruiser squadron defeats a Royal Navy squadron under Christopher Cradock.
Germany declares war on France. Belgium does not allow German arms through to the French border.
Battle of the Selle, closing phase of the Hundred Days Offensive.
First Battle of Cobadin, a phase of the conquest of Romania.
The British capture Jisr ed Damieh in the Battle of Sharon.
British capture Ovillers during the Second Battle of Albert and Battle of Bazentin Ridge.
Francis Joseph I, Emperor of Austria and King of Hungary, dies and is succeeded by Charles I.
Battle of Amiens, first phase of the Hundred Days Offensive.
Battle of Salaita Hill.
First battle of Doiran.
Battle of Hazebrouck, a phase of Operation Georgette.
Battle of Saint-Mihiel, a phase of the Hundred Days Offensive.
Allied forces occupy the Jordan Rift Valley.
Battle of Bukoba.
Battle of Beersheba (opening phase of the Third Battle of Gaza).
Second Battle of the Masurian Lakes. The Russian X Army is defeated.
The First Battle of Ypres ends the Race to the Sea. The Germans are prevented from reaching Calais and Dunkirk.
Battle of Chunuk Bair, a phase of the August Offensive.
The Kerensky Offensive fails. It is the last Russian initiative in the war.
Battle of Saint Quentin, aka Battle of Guise. Orderly Allied retreat.
Battle of Jerusalem. The British enter the city (December 11).
The Gorlice-Tarnów begins: the German troops under General Mackensen break through the Russian lines in Galicia.
Treaty of Trianon between the Allies and Hungary.
Samarrah Offensive, British capture much of Mesopotamia.
Second Offensive Battle of Verdun.
The Togoland Campaign begins.
Battle of Chesne (Closing phase of the Meuse-Argonne Offensive).
Australian forces occupy German New Guinea.
Meuse-Argonne Offensive, the final phase of the Hundred Days Offensive and of World War I.
Battle of Doberdo, part of the Sixth Battle of Isonzo.
Germany's Hochseeflotte surrendered to the United Kingdom.
Gas attack at Hulluch.
Monastir Offensive, set up of the Salonika Front.
Battle of Karakilisa, a phase of the invasion of Armenia.
Battle of Arara, a phase of the Battle of Sharon.
Second Battle of Albert (Opening phase of the Battle of the Somme).
Battle of Bakhmach.
The Tsar and his family were shot early in the morning by the Bolsheviks.
Battle of Eski Hissarlik.
Royal Air Force founded by combining the Royal Flying Corps and the Royal Naval Air Service.
Serbia is invaded by Germany, Austria-Hungary, and Bulgaria.
Battle of the Falklands. Von Spee's German cruiser squadron is defeated by the Royal Navy.
Battle of Bellewaarde, final phase of the Second Battle of Ypres.
Second Battle of Gaza. The Ottoman lines resist a British attack.
Battle of Caporetto. The Austro-Hungarians and Germans break through the Italian lines. The Italian army is defeated and falls back on the Piave River.
Austria-Hungary declares war on Belgium.
Chilembwe uprising led by John Chilembwe in Nyasaland.
Czechoslovakia proclaimed a republic.
Central powers control Belgrade.
Battle of Mount Ortigara.
Battle of Blanc Mont Ridge.
Battle of Le Grand Fayt.
First meeting of the League of Nations held in London. Official end of World War I.
Serbia declares war on Germany.
Germany's Hochseeflotte mutinies.
Eighth Battle of the Isonzo.
Corfu occupied by the Allies.
Battle of Fromelles (Initial phase of the Battle of the Somme).
First Battle of Villers-Bretonneux, a phase of Operation Micheal.
Fourth Battle of Arras (aka Second Battle of Arras (1918)), a phase of the Second Battle of the Somme
Germany declares war on Portugal. Portugal officially enters the war.
Treaty of Bucharest between Romania and the Central Powers. It will never be ratified.
The Serbian army collapses. It will retreat to the Adriatic Sea and be evacuated by the Italian and French Navies.
Germany sieges and captures fortified Longwy "the iron gate to Paris" near the Luxembourg border, opening France to mass German invasion
German troops capture Estonia.
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