Heimosodat

thumb|The map shows Finland within the borders of the Grand Duchy of Finland|Grand Duchy. The areas in light red represent the territorial gains hoped for as part of a [[Greater Finland. A border along the Karelian, Olonets and White Isthumuses (three-isthumus border) would have drastically shortened the length of the border with Russia.]] The Finnish term '''' (singular ) refers to a series of armed conflicts and private military expeditions in 1918–1922 into areas of the former Russian Empire that bordered on Finland and were inhabited in large part by other Finnic peoples.

The term has been translated into English as "Kindred Nations Wars", "Wars for kindred peoples", "Kinfolk wars", or "Kinship Wars''," specifically referring to Finnic kinship. Finnish volunteers took part in these conflicts, either to assert Finnish control over areas inhabited by related Finnic peoples, or to help them gain independence from Soviet Russia. Many of the volunteers were inspired by the idea of "Greater Finland". Some of the conflicts were incursions from Finland, and some were local uprisings in which volunteers wanted either to help people fight for independence or to annex areas to Finland. According to Aapo Roselius, about 10,000 volunteers from Finland took part in the armed conflicts mentioned below. Viena expedition (1918) Murmansk Legion Petsamo expeditions (1918 and 1920) Estonian War of Independence (1918–1920) Pohjan Pojat () and helped Estonian troops. Revolt of the Ingrian Finns (1918–1920) Aunus expedition (1919) Advance on Petrograd (1919) East Karelian Uprising (1921–1922)