In Seoul during the Korean War, Marines searching for a pack animal first hit the racetrack for its horses, alcohol, and gambling. There, they met trainer Kim Hook Moon, who reluctantly sold his prized horse "Achim High" (Flame in the Morning) for $250 to buy his sister a prosthetic leg. The Marines took her to camp, put her through "Hoof Camp," and trained her to handle recoilless rifle fire. After eight shots, she stayed calm. She learned to dodge barbed wire, avoid backblast, and take cover on "incoming" calls. They renamed her Reckless after the "reckless rifles." She became one of the guys—eating their food, loving bacon, eggs, and even beer (she’d nudge people for mixed drinks poured straight into her mouth). Once her special ammo saddle arrived, she went to work. She carried six rounds at a time and moved twice as fast as men carrying two. During intense fighting at Outpost Vegas in March 1953, the Chinese targeted her to eat her. The Marines, furious, fought even harder. Over two days of hellish battle—with constant artillery roar making communication impossible—Reckless made 51 round trips up a steep, smoke-filled, artillery-pounded 45-degree hill. She delivered 386 rounds (over 9,000 pounds) of ammo, carried wounded Marines back down, and was hit by shrapnel twice. She kept the recoilless rifles supplied, which became the Marines’ most effective weapon. Her courage inspired the men to keep fighting. The Marines held the line against overwhelming odds, inflicting over 4,000 casualties on the Chinese. This helped stop the enemy push toward Seoul and supported the eventual ceasefire. Reckless was named Hero of Outpost Vegas and promoted to Corporal in the U.S. Marine Corps. She truly became a legend.