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World War I: Austro-Hungarian forces launched an assault against Serbian defensive positions at the Kolubara river, beginning the Battle of Kolubara.
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World War I
1914–1918 global conflict
World War I or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. Main areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. There were important…Source: Wikipedia (CC BY-SA)
Austria-Hungary
1867–1918 empire in Central Europe
Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consisted of two sovereign states with a…Source: Wikipedia (CC BY-SA)
Kolubara
River in Serbia
The Kolubara is a 87 km (54 mi) long river in western Serbia; it is an eastern, right tributary to the Sava river.Source: Wikipedia (CC BY-SA)
Battle of Kolubara
1914 battle during World War I
The Battle of Kolubara was fought between Austria-Hungary and Serbia in November and December 1914, during the Serbian Campaign of 1914.Source: Wikipedia (CC BY-SA)