Infantry Division, and the 1st, and 6th Marine Divisions. of III Amphibious Corps. These divisions spearheaded an assault that would eventually land 250,000 men ashore. The 7th Division quickly moved to Kadena, taking its airfield, and drove from the west to the east coast of the island on the first day. The division then moved south, encountering stiff resistance from fortifications at Shuri a few days later. The Japanese had moved 90 tanks, much of their artillery, and heavy weapons away from the beaches and into this region. Eventually, XXIV Corps destroyed the defenses after a 51-day battle in the hills of southern Okinawa, which was complicated by harsh weather and terrain. During the operation, the division was bombarded with tens of thousands of rounds of field artillery fire, encountering Japanese armed with spears as it continued its fight across the island. Japanese also fought using irregular warfare techniques, relying on hidden cave systems, snipers, and small-unit ambushes to delay the advancing 7th Infantry Division. After the fight, the division began capturing large numbers of Japanese prisoners for the first time in the war, due to low morale, high casualties, and poor equipment. It fought for five continuous days to secure areas around the Nakagusuku Wan and Skyline Ridge. The division also secured Hill 178 in the fighting. It then moved to Kochi Ridge, securing it after a two-week battle. After 39 days of continuous fighting, the 7th Infantry Division was sent into reserve, having suffered heavy casualties. After the 96th Infantry Division secured Conical Hill, the 7th Infantry Division returned to the line. It pushed into positions on the southern Ozato Mura hills, where Japanese resistance was heaviest. It was placed on the extreme left flank of the Tenth Army, taking the Ghinen peninsula, Sashiki, and Hanagusuku, fending off a series of Japanese counterattacks. Despite heavy Japanese resistance and prolonged bad weather, the division continued its advance until 21 June 1945, when the battle ended, having seen 82 days of combat. The island and surrendering troops were secured by the next day. During the Battle of Okinawa, the soldiers of the 7th Infantry Division killed between 25,000 and 28,000 Japanese soldiers and took 4,584 prisoners. Balanced against this, the 7th Division suffered 2,340 killed and 6,872 wounded for a total of 9,212 battle casualties during 208 days of combat. The division was slated to participate in Operation Downfall as