Veterans Day (originally known as Armistice Day) is a federal holiday in the United States observed annually on November 11, for honoring military veterans of the United States Armed Forces (who were discharged under conditions other than dishonorable). It coincides with other holidays including Armistice Day and Remembrance Day which are commemorated in other countries that mark the anniversary of the end of World War I. Major hostilities of World War I were formally ended at the 11th hour of the 11th day of the 11th month of 1918 when the Armistice with Germany went into effect. At the urging of major U.S. veteran organizations, Armistice Day was renamed Veterans Day in 1954.

Veterans Day is distinct from Memorial Day, a U.S. public holiday in May. Veterans Day commemorated the service of all U.S. veterans, while Memorial Day honors those who have died while in military service. Another military holiday that also occurs in May, Armed Forces Day, honors those currently serving in the U.S. military. Additionally, Women Veterans Day is recognized by a growing number of U.S. states that specifically honor women who have served in the U.S. military.

From Wikipedia: Veterans Day

In Flanders Fields
In Flanders Fields, the poppies blow
Between the crosses, row on row,
That mark our place; and in the sky
The larks, still bravely singing, fly
Scarce heard amid the guns below.

We are the dead. Short days ago
We lived, felt dawn, saw sunset glow,
Loved and were loved, and now we lie,
In Flanders fields

Take up our quarrel with the foe:
To you from failing hands we throw
The torch; be yours to hold it high.
If ye break faith with us who die
We shall not sleep, though poppies grow
In Flanders fields.

by Lieutenant-Colonel John McCrae