And why? And don’t forget the cigar timer:
I have no doubts that the arrows were also used for trans-continental navigation by the Cold War Russian ICBMs.
Close. During WWII, many of the arrows were broken up to prevent German bombers using them. Quite how the Luftwaffe bombers were supposed to get the range, is not explained. The towers and suchlike disappeared during WWII for a much more mundane reason, the steel was needed for the war effort.
I still prefer James Hill and his cigars.