The correct answer is the following.
The question refers to the battle of Okinawa.
The number of Americans that were wounded or killed in the battle of Okinawa was 12,000 American were killed and almost 50,000 were wounded, according to historians.
The battle of Okinawa was also known as Operation Iceberg was one of the deadliest battles in the Pacific during World War II. The location of the battle was Okinawa island on April 1 to June 22, 1945, where the United States Army and Navy defeated the Japanese military forces. According to historians, the battle left almost 100,000 casualties on the Japanese side.