During his five-year military service, Bogarde served as a PI (Photographic Interpreter) who worked at RAF Medmenham and then throughout Europe and the Far East. He never says, or I don't recall offhand, but I wonder if the use of 3D via a stereoscope was part of his unit's identification technique also. The photo above shows him using a magnifier as he pores over aerial photographs, no stereoscope in sight, yet its use is an interesting speculation.
I'll have another read through his memories as a PI. If anyone knows, do jump in.
Barbara
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