Date | Event |
January 10 | Allies state peace objectives in response to Wilson’s 1916 peace note. |
January 19 | Germany urges Mexico to enter war against U.S. Telegram translated by the British. |
February 1 | Germany declares unrestricted submarine warfare. |
February 3 | U.S. breaks ties with Germany. |
February 23-April 5 | German forces begin withdrawal to strong positions of the Hindenburg Line. |
February 24 | Wilson requests permission from Congress to arm U.S. merchant marines. |
March 11 | British capture Baghdad. |
March 12 | Wilson announces the arming of U.S. merchant marines by his executive order after request fails to get approval from Congress. |
March 15 | Tsar Nicholas II abdicates. |
March 20 | U.S. war cabinet votes to declare war on Germany. |
April 2 | Wilson delivers war address to Congress. |
April 6 | Wilson asks Congress for declaration of war against Germany. |
April 9-20 | Nivelle Offensive, Second Battle of Aisne and Third Battle of Champagne, ends in French failure. |
April 9 | Canada wins at the Battle of Vimy Ridge. |
April 16-29 | French suffer 250,000 casualties as they advance at Chemin des Dames. |
April 16 | Lenin arrives in Russia. |
April-June | Over half a million French soldiers refuse to continue the failed offensive. |
May 12-October 24 | Last battles of Isonzo fought, the Italians lose. |
May 18 | U.S. passes the Selective Service Act allowing the government to draft men. |
May 28 | Pershing leaves for France. |
June 7 | British explode mines under the Messines Ridge. |
June 15 | U.S. Espionage Act passed. |
June 26 | First U.S. troops arrive in France. |
June 27 | Greece enters the war. |
July 1-16 | Russian army begins the last offensive in Galicia. |
July 2 | U.S. General John Pershing requests 1,000,000 men for the army. |
July 3 | First group of U.S. forces lands in France. |
July 6 | T.E. Lawrence and the Arabs capture Aqaba. |
July 11 | Pershing asks for 2,000,000 more men. |
September 1 | Germany takes the northernmost end of the Russian front. |
October 23 | U.S. troops enter trench warfare in France. |
October 24 | Austria-Germany breakthrough at Caporetto on Italian front. |
November 7 | Lenin leads Bolsheviks and overthrows Russian government. |
November 20 | British launch attack at Cambrai. |
December 3 | Leon Trotsky signs an armistice for the Russian government with Germany. |
December 7 | U.S. declares war on Austria-Hungary. |
December 9 | British capture Jerusalem from Turks and Arab allies. |
December 22 | Russia opens separate peace negotiations with Germany. |