The Army officer....and Aircraftsman above!!! - is of course the legendary T.E. Lawrence - "Lawrence of Arabia"
...while the SECOND man is the equally legendary (in some circles) George Brough - engineer, sporting motorcyclist....and interwar manufacturer of one of the world's most respected brands of luxury/sporting motorcycles, the Brough Superior - one of who's machines Lawrence was eventually killed riding - one of three Brough Superiors he owned in his lifetime!