Every Memorial Day since 1948, soldiers from the 3rd U.S. Infantry Regiment (The Old Guard), as well as ceremonial units from each branch of the military, gather at Arlington National Cemetery to place a flag in front of each one of the cemetery's more than 300,000 graves.
It's known as "Flags In," and this tradition kicks off the Memorial Day weekend for service members and visitors to ANC. "Flags In" is the beginning of several days of reflecting on the sacrifices of the men and women who have laid down their lives for our country.
To all of the men and women of our armed forces who have made the ultimate sacrifice in service to our country; a grateful nation gives our thanks.
To read more about the tradition of "Flags In", visit the Arlington National Cemetery website.
All pictures: US Army via Flickr