sentences:  Each badge was uniquely numbered on the reverse.The War Office maintained a register recording which serviceman each one had been issued to in United Kingdom, and the governments of Canada, New Zealand, Australia, South Africa and Rhodesia maintained their own registers of issue (which were copied to the War Office in London to provide it with an Imperial master-record).Silver War Badges issued by the Empire's dominion nations had their identification numbers on the reverse prefixed with the first letter of the issuing nation