Have a look at 2 of the blokes posted in “News” on 6 February:
Walbanke Pritt
The photgraph must be of his nephew/younger brother. He looks about 12.
and
Roy Chappell
His first victory occurs on 27 Sep 1916 flying a Martinsyde. Six months later he scores on 17 Mar 1917 also flying a Martinsyde. Eleven months later, on Feb 1918 flying a S.E.5a he gets his third. Thereafter, the remaining 8 come steadily until May 1918.
Looks like a pretty good effort to me to persevere so long. If he was flying a Martinsyde in March 1917, he did well to survive April. He must have been pleased to finally get a S.E.5a
Vin