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Zimmerman Telegram
While armies moved across the face of Europe, the United States remained neutral. -
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
Was the operational plan for a designated attack on France once Russia -
Trench warfare began
The First World War -
Christmas Truce along Western Front
Some soldiers used this short-lived ceasefire for a more somber task: the retrieval of the bodies of fellow combatants who had fallen within the no-man’s land between the lines. -
Germans introduce poison gas
German forces shock Allied soldiers along the western front by firing more than 150 tons of lethal chlorine gas against two French colonial divisions at Ypres, Belgium. -
Sinking of Lusitania
Nearly two years would pass before the United States formally entered World War I, but the sinking of the Lusitania played a significant role in turning public opinion against Germany, both in the United States and abroad. -
Battle of Verdun
Was one of the largest battles of the First World War on the Western Front between the German and French armies. -
Sussex Pledge
Allowing armed merchant ships, but not passenger ships, to be torpedoed without warning. -
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
Also known as the CPI or the Creel Committee, 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
Maintains information on those potentially subject to military conscription. -
Battle of Argonne Forest
Also known as the Maas-Argonne Offensive and the Battle of the Argonne Forest, was a major part of the final Allied offensive of World War I that stretched along the entire Western Front -
World War I ended
Was a global war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918. -
General John J. Pershing became AEF leader
Commanded the American Expeditionary Force (AEF) in Europe during World War I
