Watch live: Biden marks Veterans Day at Arlington National Cemetery

Today is Veterans Day, the annual federal holiday that celebrates and remembers all who have served in the military, both in wartime and peacetime. The day has been observed in one form or another since 1919, when then-President Woodrow Wilson commemorated the first anniversary of the World War I armistice, saying, "To us in America, the reflections of Armistice Day will be filled with solemn pride in the heroism of those who died in the country’s service and with gratitude for the victory, both because of the thing from which it has freed us and because of the opportunity it has given America to show her sympathy with peace and justice in the councils of the nations."