In addition, there were 9,000 IJN troops supported by 1,100 militia, with approximately 4,000 holed up at the underground headquarters on the hillside overlooking the Okinawa Naval Base in the Oroku Peninsula, east of the airfield.
Selain itu, masih ada 9.000 tentara Angkatan Laut Jepang yang didukung oleh 1.100 milisi, di antaranya sekitar 4.000 tentara bersembunyi di markas bawah tanah di lereng bukit, di seberang Pangkalan Angkatan Laut Okinawa di Semenanjung Oroku, sebelah timur lapangan terbang.