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." He even suggested that British and American tank divisions could have overrun Germany before the Russians if it had been deployed.
http://blog.wired.com/defense/2008/05/wwii-strobe-t-1.html
http://blog.wired.com/defense/2008/05/wwii-strobe-t-1.html