When the biggest naval armada in US history descended on the Japanese island of Okinawa in April of 1945, the result was called a "Typhoon of Steel." 

It was supposed to be a swift victory for the Americans. Instead, it became the bloodiest battle of the Pacific.

But the battle wasn’t just on land, it was underneath it. In this episode, Don Wildman discovers what it was like to live through the Battle of Okinawa.