RIMBA POST, printed: "Somewhere In Netherlands East Indies" as noted in the masthead, Jan. 6, 1945  This was actually printed on the Island of Biak. Biak is a small island located just northwest of New Guinea.  
During World War II it was a strategic airfield of the Japanese Army serving as a base for operations in the Pacific theater. American forces eventually captured the island during the Battle of Biak in June of 1944. This newspaper was begun shortly after the American takeover and looks much like other crude, typewriter-set, small-size "camp" newspapers from World War II done on a mimeograph machine.
The front page has: "Flash! YUANKS LAND NEAR LUZON" which includes a map. Measures 8 by 13 inches, single sheet, some dirtiness & minor wear to the bottom half of the back page, otherwise nice.