Finnish soldier with captured Degtyaryov machine gun. The coat doesn't seem to be his neither. Winter War, 1939-1940.

Degtyaryov

Finnish leader of the Battle of Kollaa (Dec 7, 1939 - Mar 13, 1940) during the Winter War.

Leaders of the Battle of Kollaa

Lieutenant posing between 37mm bofors anti-tank guns during the Winter War. Note that the guns are mounted on skis to make it easier to move them around in snow.

This was the most common Finnish anti-tank gun during the Winter War. It was usually used against tanks from 400-600 meters but there is atleast one known case where T-37 was destroyed from about 1700 meters.