Watch 228000 Flags Planted For Memorial Day In 1 Minute Each year in Arlington National Cemetery ahead of Memorial Day, the 3rd U.S. Infantry Regiment, known as the Old Guard, honors the nations fallen soldiers with a dramatic gesture. More than 228,000 American flags are placed at gravesites. The Old Guard has been participating in this tradition since 1948. The Flags-In ceremony echoes the origin of Memorial Day traditions. Both Confederate and Union soldiers used to decorate the graves of their fallen compatriots after the Civil War. TIME contributing photographer Brooks Kraft was able to capture the ceremony in a stunning timelapse. Watch the footage of more than 1,000 soldiers participating in the ceremony below. How are you spending Memorial Day today? 