The document describes the importance of Iwo Jima from both the US and Japanese perspectives during World War II. Iwo Jima was an important strategic target for the US to capture in order to have an airbase close enough to mainland Japan to carry out bombings. For the Japanese, defending Iwo Jima was important to allow continued attacks on US ships and to discourage a full invasion of the Japanese mainland. The battle resulted in over 6,800 US troops dead and around 21,000 Japanese troops killed while defending the strategically important island.