The U.S. military was planning between 1945 to 1946 to use all of Okinawa Island as a permanent site for its bases, declassified U.S. documents have shown.

The documents are the latest evidence to apparently reinforce the background of the current bases' location.

The Okinawa community has been trying to consolidate and reduce the U.S. bases in the prefecture, which has long hosted about 75 percent of all U.S. military facilities in Japan in terms of land area.