Dunkin Donuts is offering a free doughnut with any beverage purchase on Friday at locations nationwide, the doughnut chain said in a news release. Buy a dozen doughnuts at Krispy Kreme on Friday and score a dozen glazed for $2 at participating locations.

National Donut Day also celebrates the Salvation Army "Lassies," or women who served doughnuts to soldiers during WWI. National Donut Day is on Friday, June 6, and several chains are offering deals for the annual unofficial food holiday.