Lloyd was the son of Scottish immigrant William Glen and his Australian born wife Mary. He was born at Inverell in 1888, attended Inverell Intermediate High School and served three years with the senior Cadets. Before the War he worked for Mr. Ben Wade and was a prominent member of the Inverell Pipe Band. At the age of twenty eight he enlisted at Narrabri in December 1915, having previously been rejected due to eyesight.
Playing his bagpipes, Lloyd had the honor of leading The Wallabies recruiting March from Narrabri to Sydney in December 1915. He joined the 34th Battalion, A Company which sailed from Australia on HMAT A20 Hororata in May 1916. As part of the 3rd Division they trained in England at Salisbury Plain before the Battalion went to France in November. After being wounded in action in October 1917 he was invalided to England for treatment of a gunshot wound to his knee. Lloyd was then returned to Australia and medically discharged in October 1918.
After the War he worked in Inverell as a Coachsmith and operated a mail run from the Post Office to the Railway station. He was also an active member of the Inverell RSL Sub Branch. Lloyd died at Inverell in 1939. Members of the RSL acted as pallbearers at his funeral where the Last Post was played before his burial at the Inverell Cemetery.
Private Glen is remembered at Inverell where his name is inscribed on the Inverell Honor Roll.