Barrageballoon and Rainerton,
I doubt if
Sydney Carlin is the man with postwar service with the RAF
extending to 1929. His service record is in the AIR 76 file at the National
Archives, U.K., which includes only records for those who did not serve
with the RAF during the postwar years. Carlin's record is available for
downloading at AIR 76/77/28. The following entries in the London Gazette
make it extremely unlikely that Carlin served in the 1920s:
London Gazette, 8 August 1919, p. 10092:
"Lt. S. Carlin, M.C., D.F.C., D.C.M. (R.E., T.F.) relinquishes his comm.
on account of ill-health contracted on active service. 7th Aug. 1919."
London Gazette, 17 October 1919, p. 12857:
"Armies of Occupation.
Lt. S. Carlin, M.C., D.F.C., D.C.M., East Riding Fortress Engineers,
relinquishes his commision on account of ill-health caused by wounds,
18th Oct. 1919, and retains the rank of Lt."
Josquin