World War I

Assassination of Archduke Ferdinand

Jun 28, 1914

Ferdinand and his wife went to visit Bosnia. A bomb is thrown at their vehicle but it misses. Their visitation continued until they were killed by a lone assassin. Believing the killer was a Serbian nationalist, the Austrians targeted Serbia.

Austria Strikes

Jul 28, 1914

Austria-Hungary determined that the proper response to the assassinations was to prepare for a possible military invasion of Serbia. Austria-Hungary declared war on Serbia one month after the Ferdinand murder, which immediately started WWI.