Determine when 'National Doughnut Day' is celebrated each year. Also, identify a historical detail about its origin, specifically how it started and why. Provide both the annual celebration date and the historical detail you found.
Use a search engine (e.g., DuckDuckGo) to find information about 'National Doughnut Day' on nationaldaycalendar.com. Identify the annual celebration date for 'National Doughnut Day' from the search results or the linked page. Locate and identify a notable historical detail about its origin, including who started it and for what purpose. State the annual celebration date and the historical detail.
State the annual celebration date for 'National Doughnut Day' as 'First Friday in June'. State a notable historical detail about its origin, specifically mentioning that 'The Salvation Army started National Doughnut Day in 1938 to honor the women who served doughnuts to soldiers during World War I.'