Both countries are part of the European Union, are signatories of the Schengen Agreement, and are members of the eurozone and NATO.
[1] Relations between both nations began after the German Empire recognised the newly independent Finnish state on January 4, 1918.
[2] In one of the decisive battles of the war, German troops took Helsinki in April 1918.
Finland and Nazi Germany were "co-belligerents" against Soviet Union during the Continuation War (1941–44), but a separate peace with Soviet Union led to the Finnish-German Lapland War (1944–45).
[4] In July 2022, Germany fully approved Finland's application for NATO membership.