The roots of Donut Day date back to WWI when the Salvation Army's 'Donut Lassies' served sweet treats to soldiers to give them a taste of home.

National Donut Day, a pseudo-holiday that honors the beloved breakfast pastry, occurs annually on the first Friday in June. It was established in 1938 by The Salvation Army as a way to honor the organization's Donut Lassies, women who traveled to France to serve donuts and other snacks to soldiers during World War I, USA TODAY reported.