Mongol invasion
In 1274, Mongols from China attacked the Japanese island of Kyushu with a force of more than 40,000. Greatly outnumbered, a legion of samurai from Kyushu attempted to repel the invaders. After only a few hours, however, the Mongol fleet was forced to retreat because of bad weather. Unfavorable weather thwarted a second Mongol invasion in 1281.