Second lieutenant Jones-Williams had been brevetted a Temporary Captain when promoted to a flight commander's slot on 25 May 1917.Supplement to the London Gazette, 16 June 1917, p. 5962 Retrieved 27 February 2010. On 1 August 1919, he was granted a permanent commission as a captain.The London Gazette, 1 August 1919, pp. 9864, 9867 Retrieved 27 February 2010.
