My Dad was there Sunbat, 3rd Division, 28th Marines, company I. They were supposed to be in reserve but the hit the island on the 3rd day and took the air fields in the center of the island. Prior to Iwo he saw action on Guam. Read "Uncommon Valor was a common vertue" it gives the best account of the action, when I read that book I can hear my dad telling us boys about the battle.