CONFIDENTIAL in this subject, they were the better judges of its security implications and remained firmly of the opinion that publication must be deferred. COLONEL WILLIAMS and GROUP CAPTAIN MEARS said that the War office and Air Ministry strongly supported these views. The original Ministerial decision had been taken at a time when it could not be visualised that we would so soon be planning for a future war, as circumstances had considerably changed since that date. There would be no objection to the volume being issued as a restricted document, which would allow its use by official historians and by members of industries working for the Government.