The Battle of Saint Gotthard was fought on 13 December 1705 between a Hungarian (Kuruc) army led by János Bottyán and an Austrian-Croatian-Serbian combined army under the command of Hannibal von Heister.
The battle took place at Szentgotthárd (West-Hungary, County Vas) and Nagyfalva (Mogersdorf) (today Austria), near the Austro-Hungarian border.
On 2 November 1705 János Bottyán actuated the Hungarian campaign in Transdanubia.
On 10 December Kőszeg capitulated and Bottyán moved to Szentgotthárd, where Heister was.
The Kuruc Army between Mogersdorf and Szentgotthárd attacked the Austrians (the Habsburg troops was also consisted of several Croatian and Serbian corps).