Since Man'yōshū, the word kamikaze has been used as a Makurakotoba of waka introducing Ise Grand Shrine.
In the first invasion, the Mongols successfully conquered the Japanese settlements on Tsushima and Iki islands.
[4][better source needed] The first incident took place in autumn 1274 when a Mongol fleet of 500 to 900 ships carrying 30,000 to 40,000 men attacked Japan.
[5] During the time period between the first and second invasion, the Japanese prudently built two-meter-high walls to protect themselves from future assaults.
After months of being exposed to the elements, the fleet was destroyed by a great typhoon, which the Japanese called "kamikaze" (divine wind).
The name given to the storm, kamikaze, was later used during World War II as nationalist propaganda for suicide attacks by Japanese pilots.