Not far beyond was the Rio Grande, four hundred feet broad and crossed by another railroad bridge that must be taken. Here again the task was entrusted to Colonel Funston and the Twentieth Kansas. This time they found an old raft. Two privates stripped and swam across with a rope. Landing unarmed on the enemy's side of the river, they fastened their rope to a part of the very trench works of the Filipinos. With this connection established, Colonel Funston improvised a ferry and was soon on the enemy's side with supports. A stiff, unequal fight remained, as the ferry carried but six men on each trip. The bank was soon won, however, and the safe crossing of the army was assured. Such acts gave the natives a respect for Americans as fighting men, which caused it to be more and more difficult for the Filipino commanders to bring their forces to battle in the open. General Lawton in the meantime was conducting a brilliant movement to the eastward. After breaking the enemy forces, he returned to Manila and then marched southward into the Tagalog country, where on the 13th of June, at Zapoti Bridge, he won the most stoutly contested battle of the insurrection. The successful conclusion of these operations brought the most civilized part of the island under American control. The fighting now became scattered and assumed gradually a guerrilla character. The abler commanders of the American forces found their way to the top, and the troops, with their natural adaptability, constantly devised new methods of meeting new situations. A war of strangely combined mountain and sea fighting, involving cavalry and infantry and artillery, spread over the islands in widening circles and met with lessening resistance. An indication of the new character of the war was given by the change of the military organization, in April, 1900, from one of divisions and brigades, to a geographical basis. Each commander was now given charge of a certain area and used his men to reduce this district to order.