Along with the third corps of Damjanich between the Danube and Tisza he took part in the Battle of Szolnok, Battle of Tápióbicske, Battle of Isaszeg and Battle of Vác, then, on 5 April he was promoted to general.
On 2 August 1849, after the crossing of Tokaj he clashed with the Russian Tsarist army - outnumbering the Hungarians nearly six to one - near Debrecen and sustained a defeat.