After the end of World War I, responsibility for home defence on land rested with the Territorial Army and also the Royal Defence Corps which consisted of regular army soldiers who were too old or unfit for front line duties.
Royal Navy | Royal Air Force | United States Marine Corps | United States Army Corps of Engineers | 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 | Royal Marines | Royal Commission | Peace Corps | Royal Academy of Music | Anne, Princess Royal | 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 | Royal Botanic Gardens, Kew |