BBC news website has an interesting article about the well-known peace symbol, which turns 50 this year. BBC NEWS | UK | Magazine | World's best-known protest symbol turns 50 It briefly covers the development:Gerald Holtom, a designer and former World War II conscientious objector from West London, ... ... considered using a Christian cross motif but, instead, settled on using letters from the semaphore - or flag-signalling - alphabet, super-imposing N (uclear) on D (isarmament) and placing them within a circle symbolising Earth. Interesting that flag semaphores were part of it's inspiration since those were generally used by militaries specifically navies. So the famous peace symbol has some military connection, though indirect. Prior to reading the article, I didn't know how the symbol was derived.