Staff Sergeant Reckless, a decorated war horse who held official rank in the United States military, was a mare of Mongolian horse breeding. Out of a race horse dam, she was purchased in October 1952 for $250 from a Korean stableboy at the Seoul racetrack who needed money to buy an artificial leg for his sister. Reckless was bought by members of the United States Marine Corps and trained to be a pack horse for the Recoilless Rifle Platoon, Anti-Tank Company, 5th Marine Regiment, 1st Marine Division. She quickly became part of the unit and was allowed to roam freely through camp, entering the Marines' tents, where she would sleep on cold nights, and was known for her willingness to eat nearly anything, including scrambled eggs, beer, Coca-Cola and, once, about $30 worth of poker chips.