It was all East German housing estate chic which was all the fashion then. Pre fabricated concrete which was cheap and easy to make and construct. Lots of the big tower blocks built in the sixties and seventies and other public building were built that way. But they were poor quality crap. Most had to be demolished as they were falling apart and new buildings put up in their place. Wembley police station in NW London was a perfect example.Lots of Aldershot camps were 1960s concrete block types. Including Buller and St Omer.
I’m sure it’s all very different now. I know the St Omer Tower was demolished about ten years ago.
I remember speaking to someone who said they always felt a tad depressed coming back to Aldershot on a Sunday evening, seeing the red light on top of the St Omar tower block, it could be seen from quite a way off.