Biggest Walt I ever knew I first met on my first day at Grammar School. He was rebuked in front of the school for forging his school report. His brother was in my class and, over the next few years we heard stories of rapid progress as an RAF pilot, eventually flying Sabres in Germany.
Occasionally I used to see him in uniform , cycling through the town. I did think that was a bit odd.
A few years later, I picked up a Telegraph and read about his trial - charged with impersonating an officer. Apparently the thing that caught him out was the Croix de Guerre and DFC medals he wore. He claimed he won them in the Suez crisis.
I gather that he had gone into the RAF for National Service, failed the aircrew selection and been afraid to tell his father who was a retired Winco. He started lying and just couldn't stop. He bought the uniform in a second hand shop and might have got away with it if he had removed the medals.