In the Winter War that broke out in Finland on November 30, 1939, Finnish troops not only fought against the Soviet Red Army, but also against the extreme cold conditions of the polar winter. In front of the cameras of the war correspondents, they witnessed the deaths of Finnish infantrymen in battle.

 　　In the Winter War, which broke out on November 30, 1939 in Finland on the front lines of the Arctic Circle shortly after the outbreak of World War II, Finnish troops fought not only against the Soviet Red Army, but also against the extreme cold conditions of the polar winter. Photographs taken by battlefield correspondents witnessed the deaths of Finnish infantrymen in front of the cameras.

　The first operational plan of the Soviet Red Army envisaged an advance on the capital Helsinki, where a pro-Soviet People's Government was to be established. The Soviet Red Army High Command did not even take the effort to order a general mobilization, but only allowed the Leningrad Military District units to attack. The Soviet Red Army met fierce resistance from the Finnish Army. The Finnish army had only three divisions of 33,000 men, 60 old tanks, nearly 100 various fighter planes, and a small peacetime army. Finland's voluntary mobilization doubled the weak peacetime force: 200,000 men armed, seven new divisions and eight brigades. In the Karelia isthmus between the Gulf of Finland and Lake Ladoga, a series of small forts, blockhouses, and dugouts 140 km long, known as the Mannerheim Line, resisted the onslaught of the Soviet Red Army at every turn. The Soviet Red Army deployed tanks, but the Finns quickly targeted the weak points in the armor plates, which were red-hot when the engines were fully opened. The Finns threw bottles filled with gasoline at the tank's red-hot plates and set the tank on fire. The Soviet Red Army's attack was subsequently halted, and the weak Finland was praised around the world for its brave resistance.

　　The Soviet Red Army took new military measures and brought in elite troops from Ukraine and the Caucasus.Unable to capture the Mannerheim Line, the Soviet Red Army resumed its attack with superior forces along Finland's 1,600-km eastern border between Lake Ladoga and the Arctic Ocean. Using the only railroad line, the Murman railroad, the Soviet Red Army's Eighth, Ninth, and Fourteenth Armies moved northward. Snow began to fall, the invasion was endless, and the Soviet Red Army soldiers were severely frozen. Soviet Red Army units soon arrived on the scene: ten roads crisscrossed the deep Finnish forests. The Soviet Red Army's heavy divisions, equipped with tanks and heavy artillery, stepped up the offensive, and on March 12, 1940, the Moscow Peace Treaty was signed, with Finland ceding 9% of its territory to the Soviet Union. The Winter War cost the Finnish army about 70,000 casualties and the Soviet Red Army about 321,000 casualties.