Last summer, the world’s top software-security experts were panicked by the discovery of a drone-like computer virus, radically different from and far more sophisticated than any they’d seen. The race was on to figure out its payload, its purpose, and who was behind it. As the world now knows, the Stuxnet worm appears to have attacked Iran’s nuclear program. And, as Michael Joseph Gross reports, while its source remains something of a mystery, Stuxnet is the new face of 21st-century warfare: invisible, anonymous, and devastating.

In September 2009, the second platoon of Charlie Company arrived in Afghanistan with 42 men. Ten months later, nearly half had been killed or wounded, mostly in the Arghandab Valley—a key to controlling southern Afghanistan. Now these 82nd Airborne troops were getting ready to leave the Arghandab behind. They had one more dangerous job to do: a joint mission with the untried artillery unit that would replace them patrolling the fields, orchards, and villages they called the Devil’s Playground.

Dedicated to the people, especially journalists, of Iraq.