[2] He joined the Glamorganshire Constabulary in November 1904, and was posted to Mountain Ash, remaining there until the start of the First World War.
[3] Thomas first played rugby for local Rhondda clubs, Ferndale and Penygraig before moving to Mountain Ash, the team he would captain during the 1904/05 season.
[3] Unlike Dyke and Jenkins, Thomas was reselected for his country again, but he needed to wait until the 1908 Home Nations Championship, when he was chosen to face France at the Cardiff Arms Park.
Under the captaincy of Teddy Morgan Wales were victorious, as they were two weeks later when Thomas won his third cap against Ireland in Belfast.
He was in training with his regiment at Colwyn Bay until August, being rapidly promoted, in the meantime, to Company Sergeant Major by March.