Battle of Drina
1914 CE.
Shown on the map at 44.330°, 19.293°.
The Battle of the Drina (Serbian: Bitka na Drini, Битка на Дрини) was fought between Serbian and Austro-Hungarian armies in September 1914, near Loznica, Serbia, during the First Serbian campaign of World War I. After a first failed invasion of Serbia where he lost 40,000 men, Oskar Potiorek, the Austro-Hungarian commander of the Balkanstreitkräfte, launched a new offensive across the River Drina at the western Serbian border; after successfully crossing the river the night of 7—8 September the Austro-Hungarian forces were stopped facing strong Serbian defensive positions. In the meantime, the Serbian army was forced to end their offensive into Austrian Syrmia and regroup their forces to face the threat. Meanwhile, in the far west, a smaller force of Serbian and Montenegrin troops moved into Bosnia, taking Višegrad. In the South, the Austrians took Shabatz (Šabac). On 17 September, a counterattack pushed the Austrians back to the Drina, where both sides settled into trench warfare. The Battle of the Drina is considered one of the bloodiest on the war's Balkan Front.
Text from the Wikipedia article Battle of the Drina, licensed CC BY-SA 4.0.