Battle of Iwo Jima
This video accounts the battle of Iwo Jima and contains actual footage of the Iwo Jima invasion. The narrator go's on about the key points of the battle and how it played a major role in the bombing of Japan.
This website gives an overview of the Japanese strategy used before, during, and after the battle. It also gives the background of the Japanese commander in charge of defense at Iwo Jima. The tenacity of the Japanese is told and explains why there were many more deaths at Iwo Jima than any other Pacific battle.
This website has an official document containing detailed invasion planning and execution. It gave insight into what was needed for the invasion and the enormous manpower used.