Today in 1938 An Act (52 Stat. 351; 5 U. S. Code, Sec. 87a) approved May 13, 1938, made the 11th of November in each year a legal holiday — a day to be dedicated to the cause of world peace and to be thereafter celebrated and known as “Armistice Day.” Armistice Day was primarily a day set aside to honor Veterans of World War I.