The battle for Okinawa, chosen to be the final springboard for an Allied invasion of Japan, claimed more American lives than any other battle in the Pacific campaign. The Japanese had constructed a formidable series of defenses and were prepared to fight for every inch of the island's soil. The battle included a 700-plane Kamikaze raid against the US naval fleet. US casualties were estimated to be 49,000. Ultimately US forces took control of the island in June 1945 and in August, the atomic bombing of Hiroshima and Nagasaki brought the war against Japan to a dramatic end.