During World War II, the Battle of Iwo Jima exposed a brutal problem for U.S. Marines: Japanese bunkers, tunnels, and interlocking fire turned the black sand beaches into a killing zone, and standard ...

The Battle of Iwo Jima was fought for more than a month in a rocky 8 square mile area lined with underground tunnels that sheltered and supplied the Japanese. Here's a look at some of the most ...