Supply officer (Royal Navy) scheme (entering Britannia Royal Naval College (BRNC), Dartmouth, Devon, as a Cadet or Midshipman, under terms similar to those direct from civilian life) was open to those supply branch ratings under the age of about 25. Such ratings were called CW candidates, and they were specially reported on for selection to attend the Admiralty Interview Board before final selection for promotion and entry to BRNC. The second avenue of promotion from rating to commissioned officer was to the Special Duties (SD) List. Petty officers and chief petty officers could, with the approval of their commanding officer, become a CW candidate
Douglas Evill Douglas Evill Air Chief Marshal Sir Douglas Claude Strathern Evill, (8 October 1892 – 22 March 1971) was an Australian-born Royal Naval Air Service pilot and squadron commander during the First World War. Serving in the Royal Air Force between the wars, he was a senior air commander during the Second World War. Douglas Evill was born on 8 October 1892 in Broken Hill, New South Wales, Australia. After receiving a private education in England, Evill studied as a cadet at the Royal Naval College, Osborne, on the Isle of Wight, before attending the Britannia Royal Naval College in Devon.