Photos: Arlington National Cemetery 'Flags In' honors fallen service members for Memorial Day

Every year before Memorial Day, the 3rd U.S. Infantry Regiment, "The Old Guard," places American flags at the headstones of service members buried at Arlington National Cemetery.

Army Specialist Jose Ortiz awaits orders on where to place flags. "It means a lot," he said. "It feels great to be here because they're a lot of families without the chance to be here. I take a lot of pride in that. Placing every flag on every stone it just feels good."

Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.

Since 1948, The Old Guard has placed flags at each gravesite in honor of fallen service members.

Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.

The Tomb Guards, also known as Sentinels, place flags at the iconic memorial. The Tomb of the Unknown Soldier is decorated with three wreaths on each side panel. The back side features the inscription: “Here rests in honored glory an American soldier known but to God.”

Sargent Torres, walks past the Tomb of the Unknown Solider during the changing of the guard in Arlington  National Cemetery on Thursday, May 27, 2021.
Sargent Torres, walks past the Tomb of the Unknown Solider during the changing of the guard in Arlington National Cemetery on Thursday, May 27, 2021.
Sargent Torres, walks past the Tomb of the Unknown Solider during the changing of the guard in Arlington National Cemetery on Thursday, May 27, 2021.
Sargent Torres, walks past the Tomb of the Unknown Solider during the changing of the guard in Arlington National Cemetery on Thursday, May 27, 2021.

Members of The Old Guard, including Sargent Torres, stand watch over the Tomb of the Unknown Soldier, every day, twenty-four hours a day.

Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.

All available soldiers in the 3rd United States Infantry Regiment take part in the ceremony, placing American flags at more than 228,000 gravesites in the cemetery.

Captain Benjamin Grice turns so Seaman SN Bellot can grab more flags while members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021.
Captain Benjamin Grice turns so Seaman SN Bellot can grab more flags while members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021.

Captain Benjamin Grice turns so Seaman SN Bellot can grab more flags.

Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Seaman Ty Ross places a flag as members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Seaman Ty Ross places a flag as members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.

Flags are placed into the ground, exactly one boot length from the headstone's base.

Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.
Members of the 3rd United States Infantry Regiment, also known as The Old Guard, place flags in front of each headstone as part of the "Flags In" ceremony at Arlington National Cemetery in Arlington, Va. on Thursday, May 27, 2021. Since 1948, The Old Guard has placed flags at each headstone in honor of Memorial Day.

This article originally appeared on USA TODAY: Photos: Arlington National Cemetery 'Flags In' for Memorial Day