I wrongly identified Mike Bullock and Laurence Lyons’ book “Missed Signals on the Western Front: How the Slow Adoption of Wireless Restricted British Strategy and Operations in World War I.”
I called it “Mixed Signals” — my apologies to the authors, and thanks to bochumshapenotesinger for pointing out the error.
Here’s more about the book:
http://www.strategypage.com/bookreviews/680.asp