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Archduke Franz Ferdinand
archduke Franz Ferdinand was assassinated. he was nephew of Franz Josef and heir to the Austria- Hungarian Empire. He was shot to death along with his wife. -
German U-boat
The first German U-boat campaign begins with attacks on merchant and passenger ships in the water around British Isles. These attacks arouse the neutral United States as many Americans are killed. -
Sinking of the Lusitania
A German U-boat sinks the British passenger ship Lusitania off the Irish coast. It sinks in 18 minutes killing 1,201 people including 128 Americans. President Wilson sends 4 diplomatic protest to Germany. -
army
the German 5th army attacks French 2nd army.