The Battle of Helsinki was a 1918 Finnish Civil War battle, fought in 12–13 April between the German troops and Finnish Whites against the Finnish Reds in Helsinki, Finland. Together with the battles of Tampere and Vyborg, it was one of the three major urban battles of the Finnish Civil War. The Germans invaded Helsinki despite the opposition of Finnish White Army leader Carl Gustaf Emil Mannerheim who wanted to attack the capital city with his own troops after Tampere had fallen on 6 April. However, the Germans had their own interest in taking Helsinki as quickly as possible and then moving further east towards the Russian border. The city had been under Red control for 11 weeks since the beginning of the war.