My father actually worked in one of the buildings pictured above that is owned by the Great Oaks vocational school district. The partially demolished structure (the furthest north/east building)shows exactly how the fire walls functioned. The reason the demolished half of the building is demolished is due to fire in that section during my father's time working there.
I can't comment on the military use of the building but currently it exists as storage for supplies and materials for the vocational school (lumber, tools, general scool/janitorial supplies). I was always struck by what an impressive wooden structure it is (giant beams etc.) and also how dim, dreary, weird and otherwise spookily cool it is on the inside.