The Battle of Káty was fought between the Hungarian IV corps led by General Mór Perczel and the Austrian and Croatian soldiers of the Southern Army led by the Ban of Croatia Lieutenant Field Marshal Josip Jelačić, as part of the fight for Southern Hungary, consisting of the Bácska, Bánság and Slavonia provinces, at 7 June 1849, as part of the Summer Campaign of the 1848-1849 Hungarian Revolution of 1848 and Freedom War. Fought between two equal sized armies, the Hungarians suffered a nearly catastrophic defeat, failing to occupy the Southern regions, losing the initiative gained in the Spring Campaign. However, after the battle, Jelačić did not profit from his victory, by trying to crush the weakened Hungarians, but retreated, enabling them to reorganize.