Today's guest, James Carl Nelson, is the acclaimed author of the just-released book --- Five Lieutenants: The Heartbreaking Story of Five Harvard Men Who Led America to Victory in WWI. His knack for researching the truth about what it was like to fight in this war, and weaving these truths into compelling stories, was already evident in his first book, The Remains of Company D: A Story of the Great War. In his new book, he follows five men who left their lives of privilege to follow their idealistic dreams, in an effort to end the war to end all wars.