After Austria has called on assistance from the Russian Tzar
Nicholas I in its struggle against revolutionary Hungary, the
Hungarian army capitulates at Vilagos (now Siria in Romania),
realising their cause is now hopeless.
Citation:
Editors. "Hungarian army capitulates".
The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18221, accessed 22 May 2013.]