. . . . . . . "No. 40 (Maintenance) Group(1952\u201355)" . . "1902" . . . . . "Douglas Jackman" . "United Kingdom" . "1991" . . "1926" . . . . "Douglas Jackman" . . . "H. D. Jackman" . . . . "Maintenance Command(1958\u201361)" . "Harold Douglas Jackman" . . "Sir Douglas Jackman" .