Each year on Memorial Day weekend, soldiers from the 3d U.S. Infantry Regiment, "The Old Guard," place flags at each of the headstones in Arlington National Cemetery.
The tradition began in 1948 as a solemn reminder of what Memorial Day is truly about, according to the regiment.
There are more than 400,000-interred service members at Arlington, and the soldiers placed over 230,000 flags on Thursday.
"This simple gesture is our way of honoring and remembering the sacrifices of service members who have come before us," the regiment wrote on Facebook.
