Complex sentence: Cordery was employed as a driver to captain Noel Macklin of the Royal Naval Volunteer Reserve (RNVR) at Dover, invalided out of the Royal Artillery in 1915 and subsequently transferred to the RNVR.
Split into simpler sentences: Cordery was employed as a driver to captain Noel Macklin of the Royal Naval Volunteer Reserve (RNVR) at Dover. He subsequently invalided out of the Royal Artillery in 1915 and transferred to the RNVR.