Check out this incredible video of soldiers from the 3rd U.S. Infantry Regiment, also known as the Old Guard, placing flags at every tombstone in Arlington National Cemetery.
[revad1]
The process of placing a flag at a tombstone is repeated roughly 220,000 times. The toe of the combat boot is placed against the head of the tombstone and the flag is planted at the heel.
This ceremony has been completed annually since 1948.