On 12 August 1919, in violation of the demarcation line defined by the Entente, Szomoróc was invaded by the troops of the Kingdom of Serbs, Croats and Slovenes,[1] like what happened in Međimurje and Prekmurje.

The uprising started at 11 PM under the leadership of Lieutenant József Rankay [hu],[2] the head of the border guard branch stationed in the village of Kerc; with the participation of 17 border guards and the male residents of Kerc and Szomoróc who joined them.

However, the rebels were several times outnumbered, so the uprising was put down within hours, and Szomoróc came under Serb, Croat and Slovene rule, and the border guards and the insurgents were pushed back to Kerc.

Complaints from Muraszombati locals to the police commissioner led them to state that the prisoners did not deserve it and that their goal was to starve them to death.

[3][full citation needed] The names of the border guards and men from Kerc who also took part in the fighting have not survived or have not been found so far.