Two huge freebies today: a free donut with any drink purchase at Dunkin' Donuts and a straight-up free donut from Krispy Kreme. Choose your favorite... or, you know, go to both. It is National Doughnut Day, after all. Many local shops are also offering special deals, too. This "holiday" actually has some really interesting history behind it. The Salvation Army kicked off the first National Doughnut Day as a fundraiser in 1938 to recognize female volunteers who had made donuts for troops overseas during World War I.