President Truman, who had helped pave the general’s path to the White House by appointing him the first supreme commander of NATO forces in 1951, tried to persuade Eisenhower to run for president as a Democrat, promising that he would “guarantee” him his party’s nomination. But Eisenhower replied, “What reason have you to think I have ever been a Democrat? You know I have been a Republican all my life and that my family have