Congress passed a resolution in 1926 marking Armistice Day as an annual observance. Twelve years later, November 11 was officially a national holiday.
But it wasn't until President Dwight D. Eisenhower signed legislation in 1954 that the name was changed to Veterans Day as a way to honor all people who had served in any U.S. war.
ABC News looks at the U.S. veteran population by the numbers, using 2015 data from the U.S. Census Bureau.
The number of military veterans. Of those 18.8 million, 1.6 million are women.
The number of veterans age 65 or older. About 1.6 million are younger than 35.
The percentage of veterans who are black. About 6.4 percent are Hispanic, while 78.3 percent are white.
The number of states with a million or more veterans: California, Texas, and Florida.
The percentage of veterans 25 and older with a bachelor's degree. Nearly 31 percent of non-veterans have one.
The annual median income of female veterans. Compare that number to $22,505 for female non-veterans. The annual media income for male veterans is higher at $38,978, also higher than the number for male non-veterans at $34,168.
The number of veterans 18 to 64 years old in the labor force. Of those, 6.8 million are employed.
The number of veterans who voted in the 2014 congressional election. That means 54 percent of the veteran population cast a ballot, compared with 41 percent of non-veterans.
The number of veterans with a service-connected disability rating.
The number of all U.S. businesses that are majority owned by veterans. Veteran-owned firms comprised 7.5 percent of the nation's 5.4 million employer businesses.