For members of the Civil Defence that worked on Casualty Evacuation Trains a special breast badge was created for their battledress blouses. The below images detail a sealed pattern ARP Pattern 83 example dated 17 December 1941. Sealed patterns were sent to manufacturers to copy to ensure consistency of size and colour etc.
I am indebted to Roger Miles for sharing these images. You can find lots of interesting home front items for sale on his Home Front Collection website.
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