Henry Isaacs was born in Salisbury and was a Private in 2nd Royal Sussex Regiment with the service number of 6913. He was staying with his sister at 13 Swindon Road, Horsham, Sussex before the war.
Not much more is known about Isaacs, however his name appears in the British Jewry Book of Honour and in a press report of Jewish men who had been killed in action, which suggests that he was a recognised member of the Jewish community.
Henry was killed on the 10th of September 1914 in action in the first month of the war in France. He was posthumously awarded 1914 Star and Victory medal.
Sources used include: British Jewry Book of Honour, p.97, Medal Roll for WW1, We Were There Too https://www.jewsfww.uk/henry-isaacs-1629.php