This is not your father's war This is Iraq, where a soldier's first duty is reinforcing his Humvee with sheet metal and sand bags. Or, in the absence of plumbing, burning barrels of human waste. Where any dead dog on the side of the road might be concealing an insurgent's bomb and anyone could be the enemy. At age 17, Jason Christopher Hartley joined the Army National Guard. Thirteen years later, he is called to active duty, to serve in Iraq. Sent...