<p>Jump out. Kick in door. Spray machine-gun fire. Run to rooftop. Kill enemy. Jump back into armored vehicle. Move to new location.</p>
<p>So goes the battle for Fallujah as experienced Friday by the exhausted and bewildered soldiers of the 3rd Brigade of the Army's 1st Infantry Division. Flanked by Marines, the bleary-eyed troops led the southern push to corner die-hard Sunni Muslim insurgents who were the last obstacles to full American control of the city.</p>