Finland
1918 Civil War
1918–1920
1921–1922 Kinship Wars with Finn volunteers
1918–1920 Estonia war with Finn volunteers
1939-1940 Winter War with Russia
1941-1944 Continuation War with Russia
1944-1945 Lapland War with Germany
Russia
8 February 1904 - 5 September 1905 Russo-Japanese War
1914 - 1918 World War I
1917 - 1922 Russian Civil War
1934
1937
1938
1939 - 1945 WWII (and Finland)