The King's Badge was a large silver pin to be worn only on civilian clothing. It was issued by the British government to persons who served after World War II was declared, on September 3, 1939, and who were discharged through injury due to war service.
It's basic purpose was to show that the wearer was a veteran. Included among the eligible were members of the armed forces, the merchant navy, the fishing fleets, the Coast Guard, police, Civil Defence Services, and the Home Guard.