John Wilson "Iron Mike" O'Daniel was one of the U.S. Army's great fighting generals of the 20th century. He began his military career with the Delaware Militia in 1914, served on the Mexican border in 1916, received a Distinguished Service Cross in World War I, was Mark Clark's man for hard jobs in the early days of World War II, and commanded the storied 3rd Infantry Division from Anzio to the end of the war in Europe, ending the war in Salzburg after liberating Munich, and Hitler's Berghof and Eagle's Nest on the Obersalzberg, Bavaria, Germany. "Iron Mike "commanded I Corps in Korea 1951-1952 and ended his career as the Chief of the Military Assistance Advisory Group in Vietnam in the early days of American involvement there.