04/09/2026
A Korean stableboy sold his racehorse to a US Marine lieutenant for $250. He needed the money to buy his sister an artificial leg. She had stepped on a landmine.
The horse's name was Ah Chim Hai (아침해)— "Flame of the Morning" or "Morning Sun." She was a small chestnut mare, barely fourteen hands tall, bred for the racetrack. Lieutenant Eric Pedersen had not come to the Seoul racetrack looking for a racehorse. He was looking for something that could carry a recoilless rifle and its ammunition through Korean mountain terrain that no truck could navigate. He looked at the little mare, paid $250 of his own money, and renamed her Reckless — after the weapon she would carry.
What followed is one of the strangest and most extraordinary stories in the history of the United States military. The Marines put Reckless through what they called hoof camp. Gunnery Sergeant Joe Latham trained her to carry the 75mm shells — each one weighing 24 pounds — up steep mountain trails to the firing positions. He taught her to step over communication lines and barbed wire. He taught her to lie flat when she heard incoming fire. He taught her to respond to the shout of "Incoming!" by running for cover on her own. She learned hand signals. She learned the route from the ammunition supply point to the front so well she started making it without anyone leading her, loading up at the bottom and walking herself to the top, unloading, walking back down, loading up again.
The Marines noticed she would eat almost anything. Scrambled eggs. Beer. Coca-Cola. Once, approximately $30 worth of poker chips before anyone could stop her. She slept in the tents with the men on cold nights. She became, as one Marine put it, one of the guys.
In March 1953, the Chinese launched a massive assault on Outpost Vegas — a ridgeline position the Marines had been ordered to hold at all costs. Artillery and mortar fire came in at over 500 rounds per minute. The noise was so intense that radar screens showed nothing but static. Marines were dying faster than they could be replaced.
Reckless spent the entire second day of the battle making ammunition runs alone. Fifty-one trips. Up a 45-degree mountain trail under fire, shells bursting around her, delivering ammunition to the guns. Back down through the smoke, load up, go again. She was wounded twice — once above the eye, once in the flank — and kept going. By the end of the day she had carried over 9,000 pounds of ammunition to the front. The Marines who watched her emerge from the smoke again and again said later that the sight of her coming up that hill was the most reassuring thing they saw during the entire battle.
One sergeant who served alongside her, Harold Wadley, said: "The spirit of her loneliness and her loyalty, in spite of the danger, was something else to behold. Hurting. Determined. And alone. That's the image I have imprinted in my head and heart forever."
She was promoted to corporal on the battlefield that day. Then to sergeant. Then — in a formal ceremony at Camp Pendleton in 1959, presided over by the Commandant of the Marine Corps, with a 19-gun salute and a 1,700-man parade — to Staff Sergeant. She was the only animal ever awarded an official rank in the United States Marine Corps.
She came home to California in November 1954, arriving just in time for the Marine Corps' 179th birthday celebration as guest of honor. She attended the ball. She ate birthday cake. The Saturday Evening Post ran a profile of her that made her briefly as famous as Lassie. She retired at Camp Pendleton in 1960, received free quarters and feed for life in lieu of a pension, had four foals, and died in May 1968 with full military honors.
Her decorations — two Purple Hearts, a Presidential Unit Citation, a Marine Corps Good Conduct Medal, a Korean Service Medal, a Navy Unit Commendation, and more — were worn on her horse blanket. She is buried at Camp Pendleton. There are bronze statues of her at the National Museum of the Marine Corps, the Kentucky Horse Park, and Gorangpo Port History Park (고랑포구 역사공원) in Paju, Korea.
She was purchased for $250 from a boy who needed to buy his sister a prosthetic leg. Morning Sun became the most decorated animal in Marine Corps history.
