In 1945, General Dwight Eisenhower suggested to Army Chief of Staff George C. Marshall that legislative representatives be brought to Europe to learn about the concentration camps being found there firsthand. Izac was one of a group of 12 Congressmen and Senators sent to the European Theater of Operations, where they toured Buchenwald, Nordhausen and Dachau concentration camps, learning of the conditions directly from a number of the survivors, an experience that deeply impacted Izac and led to his belief that "terroristic and fanatical" members of the Nazi Party should be "eliminated" rather than reintegrated as part of denazification. He was also a believer in more harsh punishment for the German people in the name of justice, though he knew such sanctions were unlikely. The group penned a report, "Atrocities and other Conditions in Concentration Camps in Germany.