ROLLING STONE: The poppy plants were still low to the ground at that time of year. The two soldiers, Cpl. Jeremy Morlock and Pfc. Andrew Holmes, saw a young farmer who was working by himself among the spiky shoots. Off in the distance, a few other soldiers stood sentry. But the farmer was the only Afghan in sight. With no one around to witness, the timing was right. And just like that, they picked him for execution. He was a smooth-faced kid, about 15 years old. Not much younger than they were: Morlock was 21, Holmes was 19. His name, they would later learn, was Gul Mudin, a common name in Afghanistan. He was wearing a little cap and a Western-style green jacket. He held nothing in his hand that could be interpreted as a weapon, not even a shovel. The expression on his face was welcoming. “He was not a threat,” Morlock later confessed. Morlock and Holmes called to him in Pashto as he walked toward them, ordering him to stop. The boy did as he was told. He stood still. The soldiers knelt down behind a mud-brick wall. Then Morlock tossed a grenade toward Mudin, using the wall as cover. As the grenade exploded, he and Holmes opened fire, shooting the boy repeatedly at close range with an M4 carbine and a machine gun. Mudin buckled, went down face first onto the ground. His cap toppled off. A pool of blood congealed by his head. MORE