"The defensive organization of Iwo Jima was the most complete and effective yet encountered. The beaches were flanked by high terrain favorable to the defenders. Artillery, mortars, and rocket launchers were well concealed, yet could register on both beaches- in fact, on any point on the island. Observation was possible, both from Mount Suribachi at the south end and from a number of commanding hills and steep defiles sloping to the sea from all sides of the central Motoyama tableland afforded excellent natural cover and concealment, and lent themselves readily to the construction of subterranean positions to which the Japanese are addicted. Knowing the superiority of the firepower which would be brought against them by air, sea, and land, they had gone underground most effectively, while remaining ready to man their positions with mortars, machine guns, and other portable weapons the instant our troops started to attack. The defenders were dedicated to expending themselves- but expending themselves skillfully and protractedly in order to exact the uttermost toll from the attackers. Small wonder then that every step had to be won slowly by men inching forward with hand weapons, and at heavy costs. There was no other way of doing it. The skill and gallantry of our Marines in this exceptionally difficult enterprise was worthy of their best traditions and deserving of the highest commendation. This was equally true of the naval units acting in their support, especially those engaged at the hazardous beaches. American history offers no finer example of courage, ardor and efficiency."