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
Royal Air Force College Cranwell a roughly circular grass area ("The Orange") toward the parade ground. The building has been used for RAF officer training since HRH the Prince of Wales (later Edward VIII) officially opened it in October 1934. In 1987 the building was given Grade II listed status. The College is the RAF equivalent of the Royal Navy's Britannia Royal Naval College and the British Army's Royal Military Academy Sandhurst. At present, most RAF officer cadets complete a 24-week course within the College's Officer and Aircrew Cadet Training Unit (OACTU), Within OACTU the officer cadets undertake transformational leadership tuition, academic air power studies