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General John J. Pershing became AEF leader
President Woodrow Wilson selected Pershing to command the American troops being sent to Europe. Although Pershing aimed to maintain the independence of the AEF, his willingness to integrate into Allied operations helped bring about the armistice with Germany. -
Assassination of Archduke Ferdinand
a teenage Serbian nationalist gunned down Archduke Franz Ferdinand and his wife, Sophie, as their motorcade maneuvered through the streets of Sarajevo. -
Schlieffen Plan
plan for a war-winning offensive -
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Trench warfare began
the First World War can be said to have begun in September 1914 and ended when the Allies made a breakthrough attack that began in late July 1918. -
Christmas Truce along Western Front
At the first light of dawn on Christmas Day, some German soldiers emerged from their trenches and approached the Allied lines across no-man’s-land, calling out “Merry Christmas” in their enemies’ native tongues. At first, the Allied soldiers feared it was a trick, but seeing the Germans unarmed they climbed out of their trenches and shook hands with the enemy soldiers. The men exchanged presents of cigarettes and plum puddings and sang carols and songs. -
Germans introduce poison gas
the Germans fired shells loaded with xylyl bromide, a more lethal gas, at Russian troops at Bolimov on the eastern front. Because of the wintry cold, most of the gas froze, but the Russians nonetheless reported more than 1,000 killed as a result of the new weapon. -
Sinking of Lusitania
The sinking of the Cunard ocean liner RMS Lusitania occurred on Friday, 7 May 1915 during the First World War, as Germany waged submarine warfare against the United Kingdom of Great Britain and Ireland. -
Zimmerman Telegram
British code breakers intercepted an encrypted message from Zimmermann intended for Heinrich von Eckardt, the German ambassador to Mexico. -
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Battle of Verdun
one of the largest battles of the First World War on the Western Front between the German and French armies. 377231 dead -
Sussex Pledge
The German government responded with the so-called Sussex pledge, agreeing to give adequate warning before sinking merchant and passenger ships and to provide for the safety of passengers and crew. -
President Woodrow Wilson asked for declaration of war
President Woodrow Wilson asks Congress to send U.S. troops into battle against Germany in World War I. -
Committee on Public Information formed
was an independent agency of the government of the United States created to influence U.S. public opinion regarding American participation in World War I. -
Selective Service Act became law
creating the Selective Service System to raise an army to fight in Europe. -
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Battle of Argonne Forest
was a major part of the final Allied offensive of World War I that stretched along the entire Western Front..17700 -
World War I ended
they signed the trearty
