I have been able to find out precious little about this one. One site suggests it is only open on the first Sunday of each month, another suggests Tuesday, Thursday and Sunday. All say admission is free. One describes the displays as: "Outdoor Display, Bofors Anti-aircraft Gun Display, 3.7inch Anti-aircraft Gun Mobile Heavy, Nissan Hut Displays, Townsville Display area, Caribou Display area, Cell Display, The Navigation Display, WAAAF Display, American Display, Battle of the Coral Sea Display and Bomb and Missile Display." There appears to be a half a Huey on display too.
It is listed on TripAdvisor, so I'd take a look there if you are considering going.
This page was last updated 15 February 2015