North Finland Group (Finnish: Pohjois-Suomen Ryhmä) was a formation of the Finnish Army during the Winter War. It was responsible for an almost 800-kilometer-long border from the town of Lieksa to the Arctic Ocean. The group was under Major General Wiljo Tuompo, and the headquarters was located in Kajaani.[1]
It was charged to defend the Northern Finland. It has two subgroups, the Lapland Group in the north and the North Karelian Group in the south. During the Battle of Suomussalmi on 11 December 1939, the main headquarters took under control the Lapland Group, and appointed Kurt Martti Wallenius as its commander. The North Finland Group remained areas of the North Karelian Group, Suomussalmi and Kuhmo.[1]