Part 1
Early missteps in Iraq War led to new ideas on how to define, defeat enemy.
In the moonless dark of the Kuwaiti desert, U.S. Army troops cut eight lanes through sand-hill berms built along the Iraq border.
More than 100,000 American and coalition troops amassed on the Kuwaiti side March 20, 2003, with more than 150,000 others on the ground, in the air and at sea surrounding the country, including those aboard five aircraft carriers.