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Beginning Of World War I
June 28 - Archduke Franz Ferdinand, heir to Austria-Hungary's throne, and his wife, Sophie, are assassinated by Serbian nationalist Gavrilo Princip while the couple were visiting Sarajevo, Bosnia. -
Period: to
Beginning to the End of World War I
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Germany Declares War
Germany declares a "war zone" around Great Britain, essentially effecting a submarine blockade where even neutral merchant vessels were to be potential targets. -
Battle Of Verdun
February 21 - The Battle of Verdun begins. The Battle of Verdun was the longest battle of World War 1 and was one of the bloodiest. -
Zimmerman Telegram
January 19 - Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war. The British intercept and decipher the coded message.