"Expect them to learn quickly from these mistakes. Many Islamic State commanders are former Baathist officers who have seen U.S. firepower in action and understand how to respond to it. Some are veterans of almost three years of Syrian bomb strikes and are comfortable with quickly taking cover at the first sight of aircraft overhead. Recent images show they are dispersing their newly acquired U.S. tanks, Humvees and artillery. They also are beginning to hide their command posts in villages and digging in their small units. Their supplies are being stuffed into houses, where they cannot be spotted from the air. It's an old tactic that works. Just ask the Israelis.