 After bombings of the landing areas by the 13th Air Force and a three-day bombardment by the U.S. Navy, the 162nd and 163rd Infantry Regiments landed three miles (5 km) west of Zamboanga City.Japanese opposition to the landings were minimal, and the 41st Division troops quickly captured the city, which was decimated by the pre-invasion bombardments.The next day, 11 March, the Americans and the Filipinos encountered strong resistance when they attacked Japanese positions in the hills, overlooking the coastal plain.