Everything tagged: Suspected WWII structure

Note: the GPS reading is not as accurate as I thought at this spot as the location was between two ridges.  Have to go there again for some visual survey to get it right later.

Found this concrete structure right next to the gate to the base of the service reservoir. The roof is gone. I remember I read some article mentioning the defenders blew up the battery structures before they retreat.

Some other articles had mentioned the Aberdeen Battery had been an improvised one with two 4 inch guns.  Earlier before I went up the hill trying to look for traces of the remains of these, but I don't know what I've found has anything to do with them:

Hi there,

This one might have been repaired a bit. The exterior, with the exception of the roof, had been laid with granite. The roof has quite a few holes and the other time I walked by I saw a squirrel dived into it.

I hope someone could enlighten me a bit on what exactly is this structure.

I will also sent some photos later.

T