The high point of "kamikaze" attacks came from April 6 to May 25, 1945 during the Battle of Okinawa, in "Operation Kikusui" (""floating chrysanthemums""). In that time, seven important waves of attacks took place, with more than 1,500 "kamikaze" planes. Because their training had been too short and their airplanes were poorly made, "kamikaze" pilots were easy targets for the experienced Allied pilots, who also had much better planes. But still, the "kamikaze" who escaped the anti-aircraft fire and the enemy fighter airplanes did great damage to the Allied fleet. The Allies won the battle, but they lost many ships and men because of "kamikaze" attacks. By the end of the battle, at least 21 American ships had been sunk by "kamikazes". Some ships from other Allied navies were also sunk, and dozens more were damaged.