…the ideal shaving soap for soldiers – at least according to an advertisement in the book “Knowledge for War; every Officer’s handbook for the front” fourth edition published 1916.

As an aside; Wright’s Coal Tar Soap can still be bought, which isn’t bad for a product that first hit the shelves in 1860 – even if todays product (made in Turkey) no longer contains coal tar. Don’t think they make shaving soap any more though.