A photograph showing a long column of horse-drawn sleighs hauling refugees and their possessions. SA-Kuva.
The terms of the 1940 Moscow peace treaty that ended the Winter War were harsh. They moved the border far beyond what the Kremlin's hordes had managed to conquer.
In total, over 420 000 Finns were forced to choose: leave within a few days, or stay to become Soviet citizens with "guaranteed rights."