I only copied part of it. The link has the rest of the information. Also you might want to read this link:
https://www.defense.gov/Explore/Features/story/Article/2130718/remembering-the-battle-of-okinawa/The Battle of Okinawa (April 1, 1945-June 22, 1945) was the last major battle of World War II, and one of the bloodiest. On April 1, 1945—Easter Sunday—the Navy’s Fifth Fleet and more than 180,000 U.S. Army and U.S. Marine Corps troops descended on the Pacific island of Okinawa for a final push towards Japan. The invasion was part of Operation Iceberg, a complex plan to invade and occupy the Ryukyu Islands, including Okinawa. Though it resulted in an Allied victory, kamikaze fighters, rainy weather and fierce fighting on land, sea and air led to a large death toll on both sides.
Okinawa Island
By the time American troops landed on Okinawa, the war on the European front was nearing its end. Allied and Soviet troops had liberated much of Nazi-occupied Europe and were just weeks away from forcing Germany’s unconditional surrender.
In the Pacific theater, however, American forces were still painstakingly conquering Japan’s Home Islands, one after another. After obliterating Japanese troops in the brutal Battle of Iwo Jima, they set their sights on the isolated island of Okinawa, their last stop before reaching Japan.
Okinawa’s 466 square miles of dense foliage, hills and trees made it the perfect location for the Japanese High Command’s last stand to protect their motherland. They knew if Okinawa fell, so would Japan. The Americans knew securing Okinawa’s airbases was critical to launching a successful Japanese invasion.
Landing on the Beachheads
As dawn arrived on April 1, morale was low among American troops as the Fifth Fleet launched the largest bombardment ever to support a troop landing to soften Japanese defenses.