Royal Navy | Royal Air Force | Royal Dutch Shell | Royal Society | Royal Albert Hall | Royal Shakespeare Company | Royal Opera House | Royal Victorian Order | Royal Engineers | Royal Australian Navy | Royal National Theatre | Royal Canadian Navy | Royal Canadian Air Force | Royal Court Theatre | United States Navy Reserve | Royal Marines | United States Naval Academy | Buxa Tiger Reserve | Royal Commission | Royal Academy of Music | Anne, Princess Royal | United States Army Reserve | Royal Philharmonic Orchestra | Theatre Royal, Drury Lane | Royal Flying Corps | Royal Canadian Mounted Police | Royal Australian Air Force | Royal Artillery | Royal Festival Hall | Royal College of Art |
He did his National Service in the Royal Navy after which he was posted to RAF China Bay at Trincomalee, in modern day Sri Lanka, as a sub-lieutenant (special) in the Royal Naval Volunteer Reserves.
Educated in the Stationers' Company School and the City and Guilds Technical College in London, Vernon served in the RNVR during the First World War, before becoming a squadron major in the RNAS and was a major in the RAF in its early days.
The medal was presented for 15 years of service by Petty Officers and ratings of the Royal Naval Reserve, Royal Naval Volunteer Reserve, Royal Naval Auxiliary Sick Berth Reserve, Royal Fleet Reserve, and Royal Naval Wireless Auxiliary Reserve.