Ronald Turnbull Mark, OBE, MC & Bar (28 January 1898 – 16 December 1958) was a British flying ace of the First World War who was credited with 14 aerial victories.
His first aerial victory came at 0830 hours on 18 February 1918, when Mark, Horace Barton and Andrew Cowper drove a German DFW two-seater reconnaissance aircraft down out of control.
The next morning, ten minutes combat saw Mark help Cowper, Reuben Hammersley, and Peter MacDougall burn another DFW reconnaissance aircraft and destroy a Rumpler two-seater.
On the 26th, Mark shared with Ian Donald Roy McDonald, Herbert Richardson, and four other British pilots in the destruction of a new Fokker Dr.I triplane fighter.
The action of both these officers, in practically unmanoeuvrable machines, in coming to the rescue of each other in turn showed courage and self-sacrifice of a very high order.
[9] On 2 April 1940, Mark was granted a commission in the Royal Air Force Volunteer Reserve as a pilot officer on probation "for the duration of hostilities".
[11] On 9 February 1941 he was granted the war substantive rank of flying officer,[12] and was promoted to squadron leader in the Administrative and Special Duties Branch on 1 October 1943.
[13] By 1 January 1945, when Mark received a mentioned in despatches and was made an Officer of the Order of the British Empire,[14][15] he held the acting rank of wing commander.