Historical Dictionary of Signals Intelligence

While the interception of enemy communications must be as old as warfare itself, the invention of radio messages in 1897 gave rise to completely new possibilities in that field, and later technological developments have made it increasingly important, so the subject justifies the publication of a dictionary devoted solely to it. The book comprises 400 entries, ranging from short definitions of 20 words or so to discursive articles of 3,000 words or more. The range of topics is somewhat different from that in most of the Scarecrow series, where persons usually account for the major proportion of articles. In this...