I realise there was a war on and all that but was nobody doing even rudimentary vetting?
"It was at this time that Claye started calling himself the Honourable Douglas St Aubyn Webster Berneville-Claye and enlisted as a private soldier in the West Yorkshire Regiment. He did not stay in the ranks for long. At enlistment, he claimed to have been educated at Charterhouse School, Magdalen College, Oxford, and Emmanuel College, Cambridge, and as a result was selected for officer training. The officer training was carried out at Pwllheli and Sandhurst, where he was granted his commission as a second lieutenant in October 1941."