The Battle of Hyvinkää was fought during the Finnish Civil War on 19-21 April 1918, when troops from the German Baltic Sea Division marching from Helsinki conquered the locality from the Reds who had held it for three months. The Germans attacked Hyvinkää from three different directions; from the direction of Klaukkala and Nurmijärvi via the Hanko railway line and along the Tuusula highway and mainline. The main defense positions of the Reds were along the Hanko track in Hyvinkäänkylä, after which fierce battles took place in the station area. After the well-taken invasion, a bloody follow-up began, with Whites executing about 150 Reds, actual or suspected, during May.