The Battle of Temesvár (now Timişoara, in Romania) was a battle in the Hungarian Revolution of 1848, fought on 9 August 1849 between the Austrian Empire and Hungarian Revolutionary Army supplemented by Polish volunteers. The Austrians were led by Julius Jacob von Haynau, while the Hungarians were led by Józef Bem who arrived at the eleventh hour from Transylvania. The Austrians were victorious.