...go read a couple biographies and get back to me...
Pardon me -- I meant combat veteran.
There have been only three Presidents since Harry Truman who have not been combat veterans: Ronald Reagan, who served in the Army during World War II but never went into combat; George W. Bush, who served in the Air National Guard during the Vietnam War but never went into combat; and Bill Clinton, who didn't serve a day and resisted the draft.
Just to be clear, Truman did serve. Every previous President going back to Spanish-American War hero Theodore Roosevelt -- including FDR -- did not.