On Sunday, Frank Buckles died at the age of 110. And his death breaks the final link America had with more than 4.7 million man and women who served the nation during World War I. In 2007, Greg Corombos interviewed Buckles and learned about his service in ‘the war to end all wars’, his brutal experience in World War II and how Buckles viewed his service 90 years after the fact. Here is our tribute to America’s last Doughboy, Frank Woodruff Buckles, and the many heroes of his generation.