From the air, the Pacific island of Iwo Jima looks like a large, gray pork chop. Its strategic location, midway between the U.S. B-29 airfields on the Marianas Islands and the Japanese home islands meant that it had to be seized no matter what the cost. On February 19, 1945, the invasion of Iwo Jima was launched. It became the greatest battle fought by the U.S. Marine Corps in World War II. Fro...