The following sources have potential matches based on the name and other information associated with this record. They may or may not be connected to this person but are provided for your further research
The regimental War Diaries are held at The UK National Archives and as of April 2020 have been made available for free download*. They are the official unit war diaries for the British Army that contain records of daily activities, including casualties. They are not personal diaries.
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South Wales Borderers
Date of death: 31/10/1917
Cemetery: GORRE BRITISH AND INDIAN CEMETERY
Son of Mrs. S. Thomas, of 2, King Edward St., Whitland, Carmarthen.
Private Willie Morris Thomas
Royal Welsh Fusiliers
Date of death: 26/03/1918 (aged 19)
Cemetery: H.A.C. CEMETERY, ECOUST-ST. MEIN
Son of William and Martha Thomas, of "Brynawel" Henllan Angoed, Whitland, Carmarthenshire.