If I remember correctly, several military pundits had the opinion that the army would become bogged down in urban warfare after a quick invasion of Iraq. They would have to capture the city "block by block."
U.S. forces faced a tough urban battle Tuesday in their drive to pacify one of Iraq's most dangerous cities. Block by block, they fought their way into Fallujah, where Iraqi guerrillas killed four American civilians and a mob mutilated their bodies last week.