japan mongol invasion of japan defensive wall at hakata painting from the illustrated handscroll moko shurai ekotoba illustated account of the mongol invasion c 1293 the mongol invasions of japan of 1274 and 1281 were major military invasions undertaken by kublai khan to conquer the japanese islands after the submission of korea despite their ultimate failure the invasion attempts are of historical importance because they set a limit on mongol expansion and rank as nation defining events in japanese history 2b011bb.jpg from japan လ€ View Photo