Another Leatherneck, a black-bearded machine gunner, led a charge up a mountain of rubble that had once been a stately tower, shouting: "We're Marines, let's go!". These episodes illustrate the battle of the Hue Citadel - a grim, struggle through the courtyards and battlements of the old imperial fort. The fight pits U.S. and Vietnamese Marines, determined to take the Citadel, against North Vietnamese soldiers equally determined to hold it. John Olson, a photographer with the Pacific edition...