The Battle of Grahovac took place in the eponymous village of Grahovac from 11 to 13 May 1858, when the Montenegrin Grand Duke Mirko Petrović-Njegoš led the army of Principality of Montenegro against the Ottomans, ending in a decisive Montenegrin victory. After the victory, the demarcation of the border between Montenegro and the Ottoman Bosnia Eyalet was finalised. A considerable arsenal of war trophies was captured following the retreat of the Ottoman army.
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