Thomas Bernard Checkley  enlisted with the Royal Field Artillery. He embarked for Marseilles on 3rd November 1915 and disembarked at Alexandria on 11th November 1915.

He embarked at Alexandria on 27th November 1915 and disembarked at Salonica on 10th December 1915 where he remained.

He was transferred to the Army reserve List on 10th June 1919 and left the army on 17th April 1919