For many years the use of electronic-warfare systems during WWII remained a closely guarded military secret. Aircrew officer Alfred Price was in the unique position to lift the lid on this largely unexplored aspect of the conflict. First published in 1967, Instruments of Darkness came to be regarded as a standard reference work on this subject. This revised edition concludes with the Japanese surrender in August 1945 and brings the analysis fully up to date in the light of what we now know.