I've recommended his EXCELLENT non-fiction and fiction here previously.
Note the following quote in response to the question, Isn't that risky, just bypassing entire cities?:
"Yes. In war, calculated risks are required. Our British allies are fond of saying that "Fortune favors the bold." You don't win wars through timidity. Our lead ground forces were more than two-thirds of the way to Baghdad yesterday. That sort of progress is unprecedented in the annals of warfare. But it does leave some potentially dangerous enemy elements in the rear.

We are relying on speed to operate "inside the Iraqi decision cycle" - to keep the enemy on the ropes, physically and psychologically."

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Operating inside the Iraqi decision cycle is the key operational tenet of the OODA loop military philosophy expoused by military strategist Col. John Boyd, a philosophy enthusiastically adopted by the Marine Corps and with Dick Cheny as an advocate.