First World War > First World War Timeline & Events WW1 France > First World War Timeline & Events WW1 Timeline of World War One Chronology and Events of WW1 Assassination of Archduke Ferdinand28th June, 1914Austra-Hungary demands Serbia arrest the leaders of the Black Hand23rd July, 1914Serbia appeals to Russia for help24th July, 1914Austria-Hungary declares war on Serbia28th July, 1914Germany declares war on Russia1st August, 1914Germany declares war on France3rd August, 1914Moltke orders the Schlieffen Plan to proceed4th August, 1914German troops enter Belgium4th August, 1914Great Britain declares war on Germany4th August, 1914Lord Kitchener calls for 100,000 men to join British Army7th August, 1914Big Bertha used against Liege Forts12th August, 1914Austro-Hungarian troops invade Serbia12th August, 1914French troops enter Lorraine14th August, 1914British Expeditionary Force arrives in France22nd August, 1914Battle of Mons begins23rd August, 1914French Army abandons Plan 1724th August, 1914Battle of Tannenberg begins26th August, 1914Battle of Heligoland28th August, 1914War Propaganda Bureau Writers Conference2nd Sept., 1914Battle of the Marne begins6th Sept., 1914French troops attack German Army at the River Aisne13th Sept., 1914Battle of Albert25th Sept., 1914Battle of Arras1st October, 1914First German aircraft shot down by Allied plane5th October, 1914Battle of Ypres15th October, 1914Canadian troops arrive in Britain16th October, 1914Turkey joins Central Powers29th October, 1914Anglo-Indian invasion of Mesopotamia21st November, 1914Farman MF-11 carries out first night bombing raid21st December, 1914Christmas Truce on the Western Front25th December, 1914South African forces occupy Swakopmund14th January, 1915Battle of Dogger Bank24th January, 1915BEF attacks at Neuve Chapelle10th March, 1915Allied naval attack on the Dardanelles18th March, 1915Roland Garros uses deflector plates1st April, 1915German gas attack at Ypres22nd April, 1915Allied landings at Gallipoli25th April, 1915Sinking of the Lusitania7th May, 1915Artois Offensive9th May, 1915Italy declares war on Austria-Hungary23rd May, 1915Germany abandons Ypres offensive25th May, 1915Asquith forms coalition government25th May, 1915First Zeppelin raid on London31st May, 1915Isonzo Offensive begins23rd June, 1915Suvla Bay Offensive at Gallipoli6th August, 1915Grand Duke Nikolai sacked as Commander-in-Chief5th September, 1915First tank demonstrated to British military leaders11th Sept., 1915Anglo-French Offensive at Artois-Loos25th Sept., 1915Allied troops land at Salonika5th October, 1915Edith Cavell executed12th October, 1915Sir Douglas Haig, new BEF commander19th December, 1915Britain introduces conscription2nd February, 1916German Verdun Offensive21st February, 1916Germany declares war on Portugal9th March, 1916Battle of Jutland31st May, 1916Russian Brusilov Offensive4th June, 1916Lord Kitchener killed at sea5th June, 1916Start of Anglo-French Somme Offensive1st July, 1916Italian Gorizia Offensive9th August, 1916Hindenburg becomes German Chief of Staff29th August, 1916First use of British tanks at Flers-Courcelette15th September, 1916French recapture Douaumont Fort at Verdun24th October, 1916Somme Offensive ends18th November, 1916Beatty replaces Jellicoe as C-in-C of Grand Fleet29th November, 1916Lloyd George becomes British Prime Minister6th December, 1916Nivelle becomes French Western Front C-in-C12th December, 1916Zimmermann Telegram intercepted by Britain19th January, 1917Battle of Gaza begins19th January, 1917United States declares war on Germany19th January, 1917Start of Nivelle Offensive19th January, 1917Start of Arras offensive19th January, 1917Canadian Army captures Vimy Ridge12th April, 19172nd Battle of the Aisne begins16th April, 1917French tanks used for the first time in battle17th April, 1917Petain becomes French Western Front C-in-C15th May, 1917Maria Bochkareva forms the Women's Battalion16th May, 1917John Pershing given command of AEF19th May, 1917British attack at Messines7th June, 1917United States troops arrive in France25th June, 1917Greece declares war on the Central Powers29th June, 1917King George V changes name to Windsor7th July, 1917British Offensive at Passchendaele12th October, 1917Italian Caproretto Offensive24th October, 1917Sir Frederick Maude dies in Mesopotamia18th November, 1917Massed tank attack at Cambrai20th November, 1917Bolshevik government disbands Women's Battalion21st November, 1917Wilson announces 14 Points Peace Programme8th January, 1918Start of German Spring Offensive21st March, 1918Foch appointed Allied Co-ordinator in France29th March, 19183rd Battle of the Aisne begins27th May, 1918Battle of Le Hamel4th July, 19182nd Battle of the Marne15th July, 1918German retreat at the Marne20th July, 1918Amiens Offensive8th August, 1918Allied breakthrough at Albert21st August, 1918United States St Mihiel Offensive26th September, 1918Meuse-Argonne Offensive begins26th September, 1918Canal du Nord Offensive27th September, 1918Max von Baden appointed Chancellor of Germany3rd October, 1918Allied forces capture the Hindenburg Line5th October, 1918Italian Vittorio Veneto Offensive23rd October, 1918Kaiser Wilhelm II of Germany abdicates9th November, 1918Armistice11th November, 1918Lloyd George wins British General Election14th December, 1918Paris Peace Conference12th January, 1919Treaty of Versailles signed28th June, 1919