Restricted U.S. Military Map of Okinawa as it was Being Converted into a Major American Base.
Color-printed map of Okinawa, produced by the 3020th Engr. Topo. Co. (Corps) on Okinawa, in September 1945, immediately after the end of World War II.
The map is awash in information illustrating how the island was converted into a base of operations for the planned invasion of Japan, and later into a major Post War American military base. There are 196 numbered landmarks including airfields, ammo dumps, hospitals, signal stations, equipment repair units, etc. In addition to those numbered locations, the map is overprinted with information about piers and moorings, seaplane bases, fuel dumps (with petroleum storage capacity as of September 1, 1945), etc.
There is some scant manuscript annotation of the map, where the Military Government and a beach are noted.
The United States Army and Marine Corps landed on Okinawa on April 1, 1945, as the specially-created 10th Army; the landing was the largest amphibious assault in the Pacific Theater during World War II. The Battle of Okinawa, codenamed Operation Iceberg, lasted for 82 days after the landing, to June 1945. The Battle claimed the lives of 14,009 to 20,195 American personnel and between 77,166 and 110,000 Japanese. After a long campaign of island hopping, the Allies were planning to use Kadena Air Base on the large island of Okinawa as a base for Operation Downfall, the planned invasion of the Japanese home islands, 340 miles away.