As I said before, his army record is very badly damaged but I have been trying to work out what happened to JTD. It looks like he enlisted in 1915 in Loughborough, giving his mother who was living at 95 Guide Lane as his next of kin. I think he joined the 10th (2nd Res) Bn Leicestershires, and went AWOL on 18th October 19?
He was caught in January 1916 and placed with 11th Labour Bn R.E. A service number mentioned is 125308, Pioneer Thomas. J.
In Dec 1916, it looks as if he was declared medically unfit for services, and invalided out.
It might be worth asking on the armed forces board if anyone knows of any further details of his service career