It was May 24th, 1844 when Samuel Morse transmitted his famous telegraph message “What hath God wrought” from Washington to Baltimore. Twenty years later, the U.S. Military Telegraph Corps had trained 1,200 operators and strung 4,000 miles of telegraph wire, which increased to over 15,000 miles by the end of the Civil War. While long-distance communication proved a significant advantage for the Union armies, it also opened the door for wiretapping. It was these early experiences that demonstrated the impact of surveillance and set the foundations of electronic warfare (EW).
Over the last century, electronic warfare has had an increasing role in shaping the outcomes of conflicts across the globe; however, few people appreciate its significance and fewer still understand the technology. In this first post of our electronic warfare blog series, we present a brief history of the technology behind electronic warfare. Just as older cars are more intuitive to repair, the early EW systems are easier to understand.