Book excerpt: Hold the Marianas is the first English language account of the World War II battle of the Marianas from the Japanese perspective. Employing diaries, messages, and oral histories in the English, Japanese, and Korean languages, the author demonstrates that the Japanese commanders were their own worst enemy. Despite the importance of the Marianas to the survival of the home islands, they were slowly reinforced and defended at the beach line, a terrible choice, in light of American naval and air bombardment capabilities. The book explains why the leadership held to this flawed defense. Hold the Marianas describes how the Japanese high command finally came to realize its errors. The result was better dug-in troops at Iwo Jima and Okinawa, prolonging the battles and inflicting higher American casualties. Had an in-depth defense been used in the Marianas, American casualties might have been four or five times greater.