At three o"clock in the morning, in a mess hall in Iraq, a soldier from the Florida National Guard took a little plastic device from a lanyard around his neck and plugged it into GQ journalist Devin Friedman"s computer. It was a flash drive containing at least a hundred pictures - of his battalion in convoy through the desert, of his sister back in Florida, of every man his unit had killed. At that moment, it became clear to Friedman that Operation Iraqi Freedom was our first digital war. Not because of all the hardware you see on TV - night-vision goggles and Tomahawk missiles and Nic Robertson"s videophone - but because of the simple, inexpensive digital camera, a part of daily life for the hundreds of thousands of Americans who have served in Iraq. It"s how American servicemen share their lives with their friends and family, with one another. And here, with readers. "This Is Our War" presents 256 photos, culled from tens of thousands that "GQ" collected from American...