1)
1914

July 31
Germany enjoins Russia to stop mobilizing. Russia says mobilization is against Austria-Hungary only.

August 1
Germany declares war on Russia and mobilizes.
Germany and the Ottoman Empire sign a secret alliance treaty.

August 2
Germany invades Luxembourg.

August 3Belgium refuses German ultimatum.
Germany declares war on France.
German troops enter Russia.

August 4
Germany invades Belgium to outflank the French army.
Britain protests the violation of Belgian neutrality, guaranteed by a treaty;
German Chancellor replies that the treaty is just a chiffon de papier The United Kingdom declares war on Germany.


August 5–August 16
The Germans besiege and then capture the fortresses of Liège, Belgium.

August 6
Serbia declares war on Germany.

August 9
Montenegro declares war on Germany.

August 14–August 24
Battle of the Frontiers. The Germans obtain a victory against the British Expeditionary Force and France's Fifth Army.

August 20
The Germans attack the Russians in East Prussia. The attack is a failure in addition to being a violation of the Schlieffen Plan.

August 17–September 2
Battle of Tannenberg: the Russian army undergoes a heavy defeat by the Germans.

August 20The Germans occupy Brussels.

August 23Japan declares war on Germany.

August 24–September 7
The Germans siege and capture the Maubeuge Fortress.

August 26
British and French forces invade Togoland, a German protectorate in West Africa.

August 26–September 11
Battle of Lemberg. The Russians capture Lviv.

August 30
New Zealand occupies German Samoa (later Western Samoa).

September 5–September 12
First Battle of the Marne. The German advance on Paris is halted, marking the failure of the Schlieffen Plan.

.September 9
Theobald von Bethmann Hollweg lays out Germany's war aims.

September 11–September 21
Australian forces occupy German New Guinea.

September 13
Troops from South Africa begin invading German South-West Africa.

September 14
Erich von Falkenhayn replaces Helmuth von Moltke the Younger as German Chief of Staff.

September 28–October 10
The Germans siege and capture Antwerp, Belgium.

September 29–October 31
Battle of the Vistula, aka Battle of Warsaw.

October 16–October 31
Battle of the Yser. French and Belgian forces secure the coastline of Belgium.

October 19–November 22
The First Battle of Ypres ends the Race to the Sea. The Germans are prevented from reaching Calais and Dunkirk.

November 1
Von Spee's German cruiser squadron defeats a Royal Navy squadron under Christopher Cradock.

November 2
The United Kingdom begins the naval blockade of Germany.

November 3–November 5
Von Lettow-Vorbeck's German colonial forces defeat the British at the Battle of Tanga, German East Africa.

November 9
Battle of Cocos, northeast Indian Ocean.
The Australian cruiser Sydney destroys the German cruiser Emden.

December 8
Battle of the Falklands. Von Spee's German cruiser squadron is defeated by the Royal Navy.

December 16
The German fleet shells Scarborough and Hartlepool, England.

December 24-December 25
An unofficial Christmas truce is declared between large numbers of German and French forces.

1915

January 24
Battle of Dogger Bank between squadrons of the British Grand Fleet and the German Hochseeflotte.

February 4
Germany begins submarine warfare against merchant vessels.

February 7–February 22
Second Battle of the Masurian Lakes. The Russian X Army is defeated.

April 22–May 25
At the Second Battle of Ypres, the Germans use chemical weapons (gas) for the first time.

May 1–May 3
Battle of Gorlice-Tarnów: the German troops under General Mackensen break through the Russian lines in Galicia.

May 7
The British liner Lusitania is sunk by a German U-boat.

May 12
Windhoek, capital of German South-West Africa, is occupied by South African troops.

July 9
The German forces in South-West Africa surrender.

August 5
The Germans occupy Warsaw.

September 1
Germany suspends unrestricted submarine warfare.

September 19
The Germans occupy Vilnius. The Gorlice-Tarnów Offensive ends.

October 6
Serbia is invaded by Germany, Austria-Hungary and Bulgaria.

1916

January 24
Reinhard Scheer is appointed commander of Germany's Hochseeflotte.
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February 28
German Kamerun (Cameroon) surrenders.

March 1
Germany resumes unrestricted submarine warfare.

May 10
Germany suspends unrestricted submarine warfare.

May 31–June 1
Battle of Jutland between Britain's Grand Fleet and Germany's Hochseeflotte.

June 4
The Brusilov Offensive begins.


July 1
The Battle of the Somme begins.

July 14
Battles for Longueval and Delville Wood (Initial phase of the Battle of the Somme)
Battle of Bazentin Ridge (Initial phase of the Battle of the Somme)


July 23–August 7
Battle of Pozières (Initial phase of the Battle of the Somme)


August 18–September 5
Battle of Guillemont (intermediate phase of the Battle of the Somme)

August 27
Italy declares war on Germany.Romania enters the war on the Entente's side. Her army is defeated in a few weeks.

August 29
Paul von Hindenburg replaces Erich von Falkenhayn as German Chief of Staff.

September 6
The Central Powers create a unified command.

September 9
Battle of Ginchy (intermediate phase of the Battle of the Somme)
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September 15
Battle of Flers-Courcelette (last offensive of the Battle of the Somme). The British use armored tanks for the first time in history.

September 20
The Brusilov Offensive ends with a substantial Russian success.

September 25
Battle of Morval (part of the final stages of the Battle of the Somme)

September 26–September 28
Battle of Thiepval Ridge (part of the final stages of the Battle of the Somme)

October 1–November 5
Battle of Le Transloy (part of the final stages of the Battle of the Somme)

November 13–November 15
Battle of the Ancre (closing phase of the Battle of the Somme)

November 18
The Battle of the Somme ends with enormous casualties and no winner.

November 21
HMHS Britannic sinks because of a German mine. Francis Joseph I, Emperor of Austria and King of Hungary, dies and is succeeded by Charles I.

December 6
The Germans occupy Bucharest. The capital of Romania moved to Iaşi.

1917
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January 16
The German Foreign Secretary Arthur Zimmermann sends a telegram to his ambassador in Mexico, instructing him to propose the Mexican government an alliance against the United States.

February 1
Germany resumes unrestricted submarine warfare.

February 23
Second Battle of Kut. The British recapture the city.

February 23–April 5
The Germans withdraw to the Hindenburg Line.

April 6The United States of America declares war on Germany.


May 9–May 16
Battle of Arras. The British attack a heavily fortified German line without obtaining any strategic breakthrough.

July 31
The Battle of Passchendaele (aka Third Battle of Ypres) begins

October 24–November 4
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.

November 9–December 28
First Battle of the Piave: the Austro-Hungarians and Germans try unsuccessfully to cross the river.

November 10
The Battle of Passchendaele (aka Third Battle of Ypres) ends in a stalemate.

December 23Russia signs an armistice with Germany.

1918

February 25
German troops capture Estonia.

March 3
At Brest-Litovsk, Leon Trotsky signs the peace treaty with Germany.

March 21–March 25
First phase of the Spring Offensive (Operation Michael). The Germans obtain a Pyrrhic victory.

May 27–June 6
Third Battle of the Aisne (aka Operation Blücher-Yorck, third phase of the Spring Offensive). After initial gains, the German advance is halted.

June 9–June 12
Final phase of the Spring Offensive (Operation Gneiseau). Although substantial territorial gains, the Germans do not achieve their strategic goals

July 15–August 5
Second Battle of the Marne and last German offensive on the Western Front, which fails when the Germans are counterattacked by the French.

September 18–October 10
Battle of the Hindenburg Line, a phase of the Hundred Days Offensive. The Allies break through the German lines.

October 20
Germany suspends submarine warfare.

October 29
Germany's Hochseeflotte mutinies.

November 9
Germany: Kaiser William II abdicates; republic proclaimed.

November 11
At 6 am, Germany signs the Armistice of Compiègne. End of fighting at 11 a.m..

November 14
Czechoslovakia proclaimed a republic. German U-boats interned. 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.

November 21
Germany's Hochseeflotte surrendered to the United Kingdom.

November 22
The Germans evacuate Luxembourg.

November 23
9 days after agreeing a cease-fire, General von Lettow-Vorbeck formally surrenders his undefeated army at Abercorn in present-day Zambia.

November 27
The Germans evacuate Belgium.


CREDITS: http://en.wikipedia.org/wiki/World_War_I_timeline