Doug:

I have read so many books on U-boat warfare that I will have to check about use of the rockets, but I think it was in a remarkable book entitled Druid’s Circle. The name comes from the fact that British test pilots would use nearby Stonehenge as an aiming point when checking out new armament installations. Of course, they never actually bombed the place, which was probably a miracle.

Interesting thing was that they developed an anti-ship rocket and it did not work too well. And they developed an anti-tank rocket and it did not work, either. But then they tried the anti-ship rocket against tanks and it worked great. So they said “Whathell… let’s see if…” and tried the antitank rocket against ships and it worked great, too.