For all who bear its scars, the battle for Iwo Jima, 58 years ago (February 19-March 26, 1945), still looms gargantuan, unbelievable, devouring; not measurable by Guadalcanal, Peleliu or Belleau Wood, but by its own arena, complexity, ferocity and the character of its combatants, whose American casualties were one third of all Marine Corps casualties in the war.