The Combat of Verdun took place on the Western Front in France from 21 February to 18 December 1916. The combat, which took place on the slopes north of Verdun-sur-Meuse, was the longest of the Fir ...

The Empire of Japan, led by Prime Minister Kuma Shigenobu, submitted the Twenty-One Demands to the administration of the Republic of China on 18 January 1915, during World War I. Japan's domina ...

The RMS Lusitania was a British-registered cruise liner destroyed by an Imperial German Navy U-boat on 7 May 1915 near 11 miles off the coast of Kinsale, Ireland, during World War I. The attack occ ...

During World War I, the Ottoman Empire committed the Armenian genocide, which resulted in the systematic death of around one million ethnic Armenians. It was accomplished mainly by mass executions, ...

In 1915, Italy joined the First World War intending to complete national unity. As a result, the Italian participation in World War I is sometimes known as the Fourth Italian War of Independence, u ...

In World War, I a military campaign on the Gallipoli peninsula from 17 February 1915 to 9 January 1916 was called the Gallipoli campaign (In modern Turkey, Gelibolu). The Entente countries, Britain ...

Through World War I, the Second Battle of the Marne (15 July – 6 August 1918) was Germany's last major Western Front assault. The attack was thwarted when an Allied counteroffensive, back ...

The First Battle of the Marne apprehended from 6 September to 12 September 1914, during World War I. In the west, it resulted in an Allied triumph over the German army. The battle marked the end of ...

The Ottoman Empire go in World War I On 29 October 1914,  when two newly bought vessels of its Navy, still crewed by German mariners and led by their German admiral, launched the Black Sea Att ...

Archduke Franz Ferdinand of Austria, the heir probable to the Austro-Hungarian monarchy, and his wife, Sophie, Duchess of Hohenberg, were killed instantly by Gavrilo Princip on 28 June 1914, at Sar ...