transferred to the Royal Greek Navy. Ranks Officer ranks In the RNAS both pilots and observers held appointments as well as their normal Royal Navy ranks, and wore insignia appropriate to the appointment instead of the rank. The insignia consisted of standard Royal Navy cuff stripes corresponding to their normal ranks, surmounted by an eagle (for pilots) or a winged letter "O" (for observers). In addition, Squadron Commanders and Squadron Observers with less than eight years' seniority had their insignia surmounted by two eight-pointed stars, one above the other, while Flight Commanders and Flight Observers had their insignia surmounted by one such star. After the RNAS merged with the Royal Flying Corps to form the Royal Air Force in 1918, the RNAS pilot appointments became the basis of certain RAF officer ranks, most notably Wing Commander and Flight Lieutenant. Other ranks The following grades were introduced for other ranks in the RNAS and were announced in the London Gazette in 1914. See also List of aircraft of the Royal Naval Air Service Number 2 Armoured Car Company RAF :Category:Royal Naval Air Service aviators Footnotes Notes References External links Armoured Cars in Action by Peter Lewis, Rolls-Royce Owner, Issue No.1, October 1963 Military units and formations established in 1914 Military units and formations disestablished in 1918 1914 establishments in the United Kingdom Disbanded air forces