When a horse senses danger, its instincts tell it to run away as fast as possible.

But during the 1950-53 Korean War, one mare would run towards it: Staff Sergeant Reckless, the only horse in US history to have been promoted to the rank of sergeant.

When a horse senses danger, its instincts tell it to run away as fast as possible.

But during the 1950-53 Korean War, one mare would run towards it: Staff Sergeant Reckless, the only horse in US history to have been promoted to the rank of sergeant.

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The legend of Sergeant Reckless, America's greatest war horse

When a horse senses danger, its instincts tell it to run away as fast as possible. But during the 1950-53 Korean War, one mare would run towards it: Staff Sergeant Reckless, the only horse in US history to have been promoted to the rank of sergeant.