When one thinks of war heroes, one rarely thinks of a horse.  In 1952, during the Korean War, Lieutenant Eric Pedersen thought his platoon could use a packhorse to help transport munitions and equipment to soldiers.  He bought a reddish-brown filly from a racetrack in Seoul and named her Reckless after the recoilless guns.  Until the Marines bought horse feed, she ate whatever they ate.  She was trained to step over wires and kneel or lie down under enemy fire.  She trusted her handlers.  At the first blast of the recoilless rifle, she jumped high in the air, but didn’t bolt.  With each blast, she shook less.  For months, she delivered ammo to gun crews, sometimes by herself following the sound of the guns.  She followed her handlers even when wounded by shrapnel.  At the end of the War in 1953, she helped string communication wire.  In honor of her bravery and service, Reckless was promoted to staff sergeant.  In 1954, she was shipped to California to live at the Marine base in Camp Pendleton, near San Diego.  Artwork is large and colorful.  Although the horse and settings are realistic, the soldiers’ faces are cartoonish with button eyes.  Also included are a glossary, bibliography, website and 3 Common Core critical thinking questions.