Notice that in the photo Lawrence is wearing the uniform of an army private. He was the British Army's youngest-ever colonel at the end of WW1. At the height of his fame he left the Army and joined the Air Force as a mechanic under an assumed name (Leading Aircraftsman Shaw, if memory serves). When discovered, he resigned and re-joined the army as a private under yet another assumed name. His stated desire for obscurity is somewhat undermined by his practice of standing next to his portrait in the National Gallery hoping to be recognized by visitors.