Letters from Iwo Jima

In 2005, Japanese archaeologists explore tunnels on Iwo Jima, where they find something in the dirt. The scene changes to Iwo Jima in 1944. Private First Class Saigo and his platoon are digging beach trenches on the island. Meanwhile, Lieutenant General Tadamichi Kuribayashi arrives to take command of the garrison and immediately begins an inspection of the island defenses. He saves Saigo and his friend Kashiwara from a beating by Captain Tanida for 'unpatriotic speeches', and orders the men to begin tunneling underground defenses into Mount Suribachi. Kuribayashi and Lieutenant Colonel Baron Takeichi Nishi, a famous Olympic gold medalist show jumper, clash with some of the other officers, who do not agree with Kuribayashi's defense in depth strategy: Kuribayashi believes the US will take the beaches quickly, and that the mountain defenses will have a better chance for holding out. Read more on Wikipedia.