U.S. expeditionary forces landed in Cuba on 22 June and skirmished successfully at Las Guasimas two days later. Meanwhile, the island of Guam was "captured" by the Americans, which consisted of raising of the American flag. The U.S. also attempted to land forces near Trinidad, but were repulsed by Spanish forces. The U.S. forces captured San Juan Heights, which overlooked Santiago de Cuba, after two battles at San Juan Hill and Kettle Hill, which was preceded by a smaller battle on the San Juan Hill's right flank at El Caney. The Spanish also attempted to lift the blockade on the port of Manzanillo twice, but failed both times. The Spanish fleet also attempted to escape Santiago harbor, but was destroyed by U.S. gunboats and armored cruisers. After this victory, U.S. forces laid siege to Santiago de Cuba for 14 days, until the Spanish forces surrendered, but there were several skirmishes afterwards. The Spanish managed to cut the United States blockade at Manzanillo, but the Americans sunk two Spanish ships at Nipe Bay. The Americans also tried to land at Mani-Mani, which was west of Havana, but were repulsed by the Spanish.