The very next day, The Congress of the United States declared a state of war with Japan, and three days later declared a state of war with the Axis powers of Europe.
World War II, which was to last until 1945, was a period of time where electronics and electronic innovations blossomed. Because of the war effort, radios became smaller, lighter, tougher and were built to withstand all kinds of battle conditions.
The Amateur Radio Service in the United States was shut down for the duration of the war, with the exception of drills and excersizes conducted by the Radio Amateur Civil Emergency Service, or RACES as we still know it today. Many Hams, young and old alike, volunteered for duty in the Armed Forces, serving in the Signal Corp in the Army and as radiomen in the Navy.
But there were other operators, too.
These were clandestine radio operators, who put their lives in peril. Some lived behind enemy lines. Others parachuted into or otherwise secretly gained access to territory that was behind the enemy lines in the European Theater of Operations. They volunteered their radio skills to get critical information from behind those lines to the Commanders of the Allied Forces. The average lifetime of one of these brave radio ops was about six months. They were either extricated, or lost their lives as they were ruthlessly hunted by the German and other Axis armies.
These were the original QRPers, operating tiny little radios, often putting out less power than we QRPers are accustomed to today. Because of their mission, their antennas were also stealthy, and not because they were worried of upsetting their neighbors. No, these antennas were stealthy because if they were discovered, it cost the operators their lives. The "go kits" of these valiant operators often included cyanide or other poison pills, as while discovery meant death, it also meant a period of gruesome torture before that end.
Some of the stories of these clandestine radio operators, as well as the equipment they used were chronicled in a book called, fittingly enough, "The Clandestine Radio Operators" by Jean-Louis Perquin. It is still available at Amazon.
72 de Larry W2LJ
QRP - When you care to send the very least!