1917 |
| 5–7 January |
Allied conference in Rome to discuss priorities for campaigns in Italy and Salonika. |
| February |
Cold weather disrupts food and fuel supplies to Russian cities. |
| 1 February |
Germany begins unrestricted submarine warfare. |
| 18–22 February |
German forces commence preliminary withdrawal from Ancre sector. |
| 20 February |
First attack on Hedjaz railway by Arab irregulars. |
| 8–12 March |
Food riots in Petrograd; garrison troops mutiny. |
| 11 March |
Baghdad falls to General Maude. |
| 12 March |
Russian Revolution begins; Provisional Government and Petrograd Soviet formed. |
| 14 March |
Petrograd Soviet Order No. 1 claims control over garrison 2. |
| 15 March |
Tsar abdicates. |
| 16 March |
Germans begin main withdrawal to the Hindenburg Line. |
| 1 March |
Tsar and family arrested. |
| 26 March |
First battle of Gaza. |
| 6 April |
United States declares war on Germany. See Related reading: US Doughboy 1916–19 (Warrior 79) |
| 9 April |
Opening of British Arras offensive; Canadians storm Vimy Ridge. See Related reading: Vimy Ridge 1917 Byng's Canadians Triumph at Arras (Campaign 151) |
| 16 April |
Lenin arrives in Petrograd; French spring offensive begins on the Aisne. |
| 17 April |
Second battle of Gaza; despite use of tanks, momentum is lost and attack stalls. |
| 5 May |
Allies launch major offensive in Serbia but fail to get Serb co-operation. |
| 15 May |
Petain succeeds Nivelle as French Commander-in-Chief. |
| 16 May |
Kerensky becomes Russian Minister of War. |
| 22 May |
Kerensky appoints Brusilov Commander-in-Chief. |
| 7 June |
British attack on Messines Ridge. |
| 12 June |
King Constantine of Greece abdicates after Allied ultimatum, succeeded by younger son Alexander; British and French troops arrive at Piraeus. |
| 18 June |
Russian South-West Front offensive begins. |
| 26 June |
Venizelos confirmed by allies as Greek Prime Minister. |
| 2 July |
Russian South-West Front offensive stalls; Greece declares war on Central Powers; in Arabia, Colonel Lawrence and Arab irregulars attack Hedjaz railway and Turkish garrisons. |
| 8 July |
Central Powers counterattack; South-West Front retires to river Seret. |
| 10 July |
North and West Front troops refuse to attack. |
| 13 July |
Kornilov replaces Brusilov, calls off offensives. |
| 31 July |
Third Battle of Ypres begins. |
| 27 August |
Failure of Kornilov's attempt to seize power. |
| 1–5 September |
German Riga campaign. |
| 12 September |
Italy: New German 14th Army under General von Below deploys on Isonzo front. |
| 24 October |
Battle of Caporetto; Austro-German attack breaks Italian 2nd Army. |
| 29 October |
General Cadorno orders retreat to line of River Piave. |
| 31 October |
Italians back behind river Tagliamento; in Palestine , Allenby opens third battle of Gaza |
| 5 November |
Allies confer at Rapallo as Italians ask for 15 Allied divisions. |
| 6 November |
Passchendaele captured by Canadians. See Related reading: The Canadian Army at War (Men-at-Arms 164) |
| 7 November |
Bolsheviks seize power. |
| 8 November |
Lenin proposes peace: no annexation and no indemnities. |
| 9 November |
General Diaz replaces Cadorna as Italian Commander in-Chief. |
| 14 November |
Allenby resumes advance on Jerusalem. |
| 16 November |
Clemenceau becomes French Prime Minister. |
| 20 November |
Battle of Cambrai begins. |
| 9 December |
Jerusalem falls to Allenby. |
| 10 December |
Armistice between Romania and Central Powers. |
| 17 December |
Armistice between Russia and Central Powers. |
| 22 December |
Russo-German peace negotiations begin at Brest-Litovsk; in Salonika , General Guillaumat replaces Sarrail as Allied Commander-in-Chief; Austrians fail to break through river Piave as astonishing revival in Italian national morale takes place. |
