Some of the other islands that saw major battles in World War II, such as Iwo Jima, were uninhabited or had been evacuated. Okinawa, by contrast, had a large indigenous civilian population; US Army records from the planning phase of the operation make the assumption that Okinawa was home to about 300,000 civilians. According to various estimates, between a tenth and a third of them died during the battle, or between 30,000 and 100,000 people. The official US Tenth Army count for the 82-day campaign is a total of 142,058 recovered enemy bodies (including those civilians pressed into service by the Imperial Japanese Army), with the deduction made that about 42,000 were non-uniformed civilians who had been killed in the crossfire. Okinawa Prefecture's estimate is over 100,000 losses,