Hi Alan and Shaun,
Thanks for the replies. Firstly, his job at the time of the conviction was as Quartermaster Regimental Sergeant Major, responsible amongst other things for feeding the troops. The Disposal and Liquidation Commission did not exist in 1918 as it was only introduced in 1921. The man who ran the Commission was, I believe Sir Henry Norman, who lived coincidentally in Chipping Norton which is not far from Banbury.
I do not believe that it was a bogus title, so still left with how did he get that job, or for that matter any job with the Army after his conviction. I have been told by my Mother, that later on he became Manager of an Aluminium factory in Banbury. Bill