Finnish infantry defending trench on the Karelian Isthmus
Unknown author<span style="display: none;">Unknown author</span>
During the 1939-40 Winter War, perhaps December 6, 1939
<a rel="nofollow" class="external free" href="http://www.mil.fi/perustietoa/talvisota_eng/timer-10.html">http://www.mil.fi/perustietoa/talvisota_eng/timer-10.html</a>