November 11 is an official holiday in The United States of America commemorating all living veterans of all American wars. It is celebrated by ceremonies at cemetaries - usually wreaths are layed while playing "Taps".
Originally called Armistice Day it celebrated the anniversary of the ending of World War I. On this day in 1918 the Allies and the Germans signed The Armistice and in honor of this important event an official holiday was introduced in 1938. Soon after World War II it became a celebration of all those who died serving their country and in 1954 the name of the holiday was changed to Veterans' Day.
In 1978 it was pronounced a federal holiday. Over time it became a celebration of all who served and survived in a war in order to avoid confusion with Memorial Day which is designated for honouring all those who died in nation s service.