The Battle of De Winton Field was a clash between the British Union of Fascists and various anti-fascist demonstrators that took place in Tonypandy, Wales, on 11 June 1936.
Protected by police, the fascists attempted to hold their speeches, but were drowned out by jeers from the protestors.
The situation soon turned violent, with stones being hurled at the fascists who attempted to continue their speeches.
[4] Some of the anti-fascist participants in the battle would later volunteer for the International Brigades, helping fight fascism in the Spanish Civil War.
Welsh volunteers would end up representing the largest regional industrial grouping within the British Battalion of the International Brigades.