Or, rather, an unused weapon of world war 2.
It might have been the greatest lost weapon of World War II. Major-General JFC Fuller, the man credited with developing modern armored warfare in the 1920's, called failure to use it "the greatest blunder of the whole war."
Over three hundred CDLs were built -- using Matilda, Churchill and Grant tanks -- and might have played a major role after D-Day. but instead, they remained unused. There seem to ahve been two reasons for this. One the one hand, the power or the CDL was kept extremely secret: "Even the Generals who should have used it did not know what the tank could do," complained its inventor, Marcel Mitzakis. And those that had heard of it had trouble believing at a simple flickering light could have any effect, and preferred to rely on proven weapons. Fuller was one of the few who appreciated what the CDl might have achieved.
Read it all: Secret Strobelight Weapons of World War II.
TY HotAir