During the Battle of Koljonvirta ( 27 October 1808 ) , Duncker together with Colonel Fahlander and Major Malm and only 600 men helped Sandels to utterly defeated a superior Russian force .
In June 1808 he captured a large transport of supplies to the Russians .
During the Battle of Koljonvirta ( 27 October 1808 ) , Duncker together with Colonel Fahlander and Major Malm and only 600 men helped Sandels to utterly defeated a superior Russians force .
In June 1808 he captured a large transport of supplies to the Russians .