Armed Forces Day
May 18, Saturday
In the United States, Armed Forces Day is celebrated on the third Saturday in May. It falls near the end of Armed Forces Week, which begins on the second Saturday of May and ends on the third Sunday of May (the fourth if the month begins on a Sunday, as in 2016).
First observed on 20 May 1950, the day was created on 31 August 1949 as President Harry S. Truman led the effort to establish a single holiday for citizens to come together and thank military members for their patriotic service in support of our country.