Britain setup a holiday/prison camp for high-ranking german officers and bugged everything. It's a fascinating story.. https://www.amazon.com.au/Walls-Have-Ear

Britain setup a holiday/prison camp for high-ranking german officers and bugged everything. It's a fascinating story.. https://www.amazon.com.au/Walls-Have-Ears-Intelligence-Operation/dp/0300238606 https://www.amazon.com.au/Walls-Have-Ears-Intelligence-Opera...