From day one, the November 2004 offensive to clear Fallujah, Iraq, of enemy fighters was a grueling block-by-block fight. Deadly ambushes, booby-trapped houses, and an entrenched and well-prepared force of insurgent fighters harried the Marines every step of the way forward during the Second Battle of Fallujah. Eight days into the fight, it was just as unforgiving.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.