Finnish War
February 21, 1808 – September 17, 1809 · Finland
Result Russian victory
Russia invaded Finland, then part of Sweden, and defeated the Swedish army. Under the Treaty of Fredrikshamn Sweden gave Finland to Russia, which made it an autonomous Grand Duchy.
Russian Empire
Sweden
Battles 17
- Siege of Sveaborg March 2 – May 3, 1808 · Russian victory
- Battle of Pyhäjoki April 16, 1808
- Battle of Siikajoki April 18, 1808 · Swedish victory
- Battle of Revolax April 27, 1808 · Swedish victory
- Battle of Pulkkila May 2, 1808 · Swedish victory
- Battle of Lemo June 19–20, 1808 · Russian victory
- Battle of Vaasa June 25–26, 1808 · Russian victory
- Battle of Kokonsaari July 11, 1808 · Russian victory
- Battle of Lapua July 14, 1808 · Swedish victory
- Battle of Sandöström August 2–3, 1808 · Russian victory
- Battle of Alavus August 17, 1808 · Swedish victory
- Battle of Karstula August 21, 1808 · Russian victory
- Battle of Ruona–Salmi September 1–2, 1808 · Swedish victory at Ruona
- Battle of Jutas September 13, 1808 · Swedish victory
- Battle of Oravais September 14, 1808 · Russian victory
- Battle of Koljonvirta October 27, 1808 · Swedish victory
- Battle of Ratan August 20, 1809
Before and after
- Ended by
- Treaty of Fredrikshamn September 17, 1809
