 As an example, the Royal Military Academy Sandhurst wore scarlet and blue "review order" uniforms until World War I, substituted khaki service dress for parade from 1919 to 1939 and now holds dark blue No 1 dress uniforms for the use of its cadets.The Royal Military Police retain the latter order of dress for general issue.Historically, the Royal Air Force regulations permitted the wearing of a full dress uniform in both home and warm-weather variants.