Thus far I have learned that he was commissioned from Sandhurst on 16th December 1914 and arrived in France on 3rd February 1915 joining 'C' Company, 1St Somerset Light Infantry. On 13th May 1915 he was wounded and evacuated to England. A year later on 22nd May 1916 he rejoined the Battalion during the build up to the Somme offensive.
He was initially listed missing, subsequently confirmed killed, during the attack by 11th Brigade on Redan Ridge near Beaumont Hamel on 1st July 1916. One of nearly 20,000 killed on that day. Thomas Dodington has no known grave and is commemorated on the Thiepval Memorial to the Missing of the Somme, Pier and Face 2k My sources indicate that his father, Colonel Roger Dodington, commanded 24th Heavy Battery Royal Garrison Artillery, was a Justice of the Peace and Deputy Lieutenant of the County of Somerset. He is also recorded as Thomas’ next of kin and lived at Horsington House, Templecombe. Colonel Dodington’s middle initial is recorded as 'M' in the document I have. You have it as D. I think the 'M' must be for Marriott which for some reason young Thomas dropped as a surname when he enlisted.
His record of service is at the Public Record Office, Kew, London. The reference is WO 339/23629, he also features in 1st SLI92's records of officers' service, reference WO 79/479.