Classified SECRET post-war publication compiled by the authority of the Army Council, the object of which was to preserve the experience gained in weapon development during WW2. This is a valuable volume, which is part of a three volume set, and covers matters not considered in great detail in the main Military series. Very rare in it's original and only 1951 printing, with 375 copies issued. This reprint is taken from the file copy held by The Ministry of Defence Pattern Room. Chapters: Major Policy. Organization. The war gases. Gas Weapons. Employment of gas and tactical doctrine. Defensive equipment. Gas training- principles and development. Development in enemy countries.