Finnish War: Swedish forces led by General von Döbeln defeat Russian forces led by General Šepelev in the Battle of Kauhajoki.

The Finnish War was fought between the Kingdom of Sweden and the Russian Empire from 21 February 1808 to 17 September 1809 as part of the Napoleonic Wars. As a result of the war, the eastern third of Sweden was established as the autonomous Grand Duchy of Finland within the Russian Empire. Other notable effects were the Swedish parliament's adoption of a new constitution and the establishment of the House of Bernadotte, the new Swedish royal house, in 1818.

Georg Carl von Döbeln was a Swedish friherre (baron), Lieutenant general and above all known for his efforts on the Swedish side during the Finnish War.

The Battle of Kauhajoki was fought between Swedish and Russian troops on August 10, 1808.

August 10 is the 222nd day of the year in the Gregorian calendar; 143 days remain until the end of the year.