Reginald enlisted on 26 May 1913 in London as Private CH/17960 with the 1st Royal Marines Battalion, Royal Naval Division. He was recorded as aged 17 and employed as a news-vendor living at 27, Vale Road, Bushey.
Based at Chatham, he served on a number of ships, including the pre-dreadnought class battleships, HMS Canopus and Victorious, the depot ship HMS Vulcan, the armed troopship HMS Hecla, and HMS Ophir, which was an ocean liner that served as the royal yacht between 1901 and 1915 when it requisitioned by the Admiralty.
He was embarked with the Royal Marine Brigade on 15 December 1917 and drafted for the British Expeditionary Force on 4 February 1918, joining the 1st battalion of the Royal Marines. He was reported missing on 24 March 1918 and died of disease, aged 22, on 22 May 1918 whilst a prisoner of war.
He was buried at the Sedan (St Charles) Communal Cemetery in France and is commemorated on the Bushey Memorial. Also at St James’ Church (where his name is given as Glenister) and on the memorials at Bushey & Oxhey Methodist Church and at St Paul’s Church, Bushey.
There is a brief article about Reginald in the West Herts and Watford Observer dated 18 May 1918, and a Death announcement in the issue dated 21 September 1918, plus an In Memoriam in the issue dated 31 May 1919.