In this battle the Ottoman Empire under Sultan Murad II defeated the Polish and Hungarian armies under Wladyslaw III of Poland and János Hunyadi of Hungary. The Polish king dies.
Citation:
Editors. "Crusade of Varna defeated by the Ottomans".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=9703, accessed 22 May 2013.]