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Birgelen Veterans Wikipedia entry Primary School - blog
Y Services (Garats Hay)

RA 1792 HF Receiver SIGINT Definition  

Bletchley Park GCHQ History 'Y' services

Regiments and Corps
Intelligence Corps Royal Signals Womens Royal Army Corps
Royal Pioneer Corps Royal Army Pay Corps Army Catering Corps
Royal Army Medical Corps Royal Electrical & Mechanical Engineers Royal Engineers
Royal Army Ordnance Corps Royal Army Chaplains' Department  

Items of Interest?
Pension claim form for those who served at least 6 years, are over 60, and are not receiving a pension.
Mesothelioma For those with life-threatening illnesses that are a result of exposure to asbestos (much used in older military equipment - especially ships).