I found this little gem.
It is a short story called "The Sound of His Horn":
The Sound of His Horn is a 1952 dystopian time travel/alternative history novel by the senior British diplomat John William Wall, written with the pseudonym Sarban. (Wikipedia) http://en.wikipedia.org/wiki/The_Sound_of_His_Horn
Full version
http://www.munseys.com/diskfive/soundhorn.pdf
I read it so many years ago, paperback, translated to Hebrew. It really influenced me way back, before I knew the smells of war and the sounds of pain.