Haldalgo, representing U.S. Marine Corps horse Sgt. Reckless who served during the Korean War, is awarded with the PDSA Dickin Medal beside Sgt. Mark Gostling, right, and Lt. Col. Michael Skaggs in London, Wednesday.

LONDON — A U.S. Marine Corps horse who served during some of the bloodiest fighting of the Korean War has been posthumously decorated for bravery.

Sgt. Reckless was awarded the Dickin Medal during a ceremony at the Korean War Memorial in London on Wednesday, the 63rd anniversary of the end of the war.

A serving British Army horse stood in for the late Reckless at the ceremony.

The chestnut Mongolian mare served as an ammunitions carrier for the Marines’ anti-tank division. She made repeated trips to supply ammunition and retrieve wounded troops under heavy bombardment during the battle for Outpost Vegas in March 1953.

After the war, Reckless retired to the United States and died in 1968 at age 20. She was nominated by a historian who wrote a biography about her.

Reckless is the 68th recipient of the medal, awarded by the PDSA veterinary charity and billed as the animal equivalent of the Victoria Cross — Britain’s top award for military valor.

Since 1943, the medal has recognized gallantry by animals serving with the military, police or rescue services.

Almost half the recipients have been dogs, including a World War II commando collie who made more than 20 parachute jumps. The medal also has gone to police horses, carrier pigeons and, once, to a cat — a Royal Navy ship’s mascot.