1939 – 1940
When Stalin demanded that Finland surrender strategic territories in November 1939, the small Nordic nation of 3.7 million refused — and the Red Army of the world's largest country invaded. What followed was one of history's greatest military upsets: Finnish ski troops in white camouflage, armed with Suomi submachine guns and Molotov cocktails, shattered division after division of Soviet troops in temperatures of -40°C, inflicting casualties at a ratio of nearly 6-to-1. Though Finland ultimately lost 11% of its territory under the Moscow Peace Treaty of March 13, 1940, its 105-day resistance stunned the world, convinced Adolf Hitler that the Soviet Union was vulnerable, and gave birth to the legend of Simo Häyhä — the deadliest sniper in the history of warfare.
Chapter-by-chapter narrative with maps, primary sources, and key events.
Explore battles on a live map with a timeline slider and territory overlays.
Deep-dive into every major engagement — commanders, casualties, significance.
Biographical flip cards with real portraits, facts, and full biography pages.
Trace each figure's full life journey — birth, education, battles, and death — on a live map.
Scroll-driven visualization of casualties — each dot a thousand lives.
Weapons, war machines, and the military innovations that defined how this conflict was fought.
Cause-and-effect chains tracing the war's long shadow on history.
War crimes, massacres, and the darkest chapters of this conflict — documented for history.