In the 13th century, the Mongols conquered and controlled China under the Yuan dynasty. Subsequently, they attempted to invade Japan twice. In early October 1274, the Battle of Bun'ei began with a combined force of Mongols and Koreans. They arrived on ships and seized the Japanese islands Tsushima, Iki island, Hirato island, Taka and Nokono. The Mongols slaughtered the inhabitants of Tsushima and about 1000 Japanese soldiers were killed on Iki island. When the Mongols arrived on Japan's mainland of Kyushu they encountered the first real Japanese army. During the Battle of Akasaka the Japanese won with a surprise attack by the forces of Kikuchi Takefusa. The second victory was at the Battle of Torikai-Gata where the samurai of Takezaki Suenaga and Shiraishi Michiyasu killed 3,500 Mongols. The Mongol army and Hong Dagu withdrew to their ships towards the Yuan Dynasty. The Japanese army conducted night attacks and killed as many soldiers as they could. On the night of October 19, a typhoon caused one-third of their returning ships to sink and many Mongol soldiers drowned. This typhoon was called the Kamikaze which means 'divinely conjured wind'.