You don't seem to see many O scale military bases I built one and ran it for a couple of years it was interesting both in building it and operating it notice I added another dead end spur at the warehouse the traffic got that busy!
I was surprised at the amount of military rolling stock available. I painted a 44 tonner in US Army colours for the base. I have more photos somewhere. When I dismantled the base for a Steel mill I put the large warehouse out the front of the house on a junk collection and someone took it within an hour don't ask me where it ended up but O scale here in Perth is rare as oil rigs ! Roo.