fallen"; in fact, the battle for Manila had barely begun. Almost at once the 1st Cavalry Division in the north and the 11th Airborne Division in the south reported stiffening Japanese resistance to further advances into the city. General Oscar Griswold continued to push elements of the XIV Corps south from Santo Tomas University toward the Pasig River. Late on the afternoon on 4 February, he ordered the 2nd Squadron, 5th Cavalry Regiment, to seize Quezon Bridge, the only crossing over the Pasig that the Japanese had not destroyed. As the squadron approached the bridge, Japanese heavy machine guns opened fire from a formidable roadblock thrown up across Quezon Boulevard, forcing the cavalry to stop its advance and withdraw until nightfall. As the Americans and Filipinos pulled back, the Japanese blew up the bridge. On 5 February, the 37th Infantry Division began to move into Manila, and Griswold divided the northern section of the city into two sectors, with the 37th responsible for advancing to the south, and the 1st Cavalry Division responsible for an envelopment to the east. The Americans secured the northern bank of the Pasig River by 6 February, and had captured the city's water supply at the Novaliches Dam, Balara Water Filters, and the San Juan Reservoir. On 7 February, Gen. Beightler ordered the 148th Regiment to cross the Pasig River and clear Paco and Pandacan. The bitterest fighting for Manila – which proved costliest to the 129th Regiment – was in capturing the steam-driven power plant on Provisor Island, where the Japanese held out until 11 February. By the afternoon of 8 February, 37th Division units had cleared most of the Japanese from their sector, but the residential districts were damaged extensively. The Japanese added to the destruction by demolishing buildings and military installations as they withdrew. Japanese resistance in Tondo and Malabon continued until 9 February. Trying to protect the city and its civilians, MacArthur had stringently restricted U.S. artillery and air support. Yet, by 9 February, American shelling had set fire to a number of districts. "If the city were to be secured without the destruction of the 37th and the 1st Cavalry Divisions, no further effort could be made to save buildings, everything holding up progress would be pounded." Iwabuchi's sailors, marines, and Army reinforcements, having initially had some success resisting American infantrymen armed with flamethrowers, grenades and bazookas, soon faced direct