On Ancestry, I found the army discharge record for Henry Edward Thrale.
Estimated birth year: abt 1865
Age at enlistment: 50
Residence: 3 Swaton Road, Campbell, Road, Bow, London
Marital status: Married
Document Year: 1915
Regimental number: 064036
Unfortunately, I do not have an entry for Henry Edward on the Thrale family tree - can anyone assist?
FreeBMD lists a Henry Edwards Thrale birth in the Dec 1858 quarter