U.S. forces in Iraq are waging a pivotal campaign in modern warfare-combat on the first "networked" battlefield.
One problem: the enemy has a few networks of its own
The mission changes for Charlie Company seconds after the soldiers roll off the base. The dreary night patrol around Balad, a shambling Shi'ite town in north-central Iraq, has just been canceled. It's time instead to hightail it west, to the Sunni neighborhood of Ad Duluiyah. "Alpha Company is taking direct fire," a voice crackles over the radio in First Lt. Brian Feldmayer's Humvee. "I need you to expedite."