Veterans Day originated as "Armistice Day" on Nov. 11, 1919, the first anniversary of the end of World War I. Congress passed a resolution in 1926 for an annual observance, and Nov. 11 became a national holiday beginning in 1938. Veterans Day is not to be confused with Memorial Day - a common misunderstanding, according to the U.S. Department of Veterans Affairs. Memorial Day (the fourth Monday in May) honors American service members who died in service to their country or as a result of injuries incurred during battle, while Veterans Day pays tribute to all American veterans - living or dead - but especially gives thanks to living veterans who served their country honorably during war or peacetime.
Reference: http://www.history.com/topics/veterans-day-facts
