Which of these authors fought at the 'Battle of Somme'?

John Ronald Reuel Tolkien (3 January 1892 – 2 September 1973) was an English writer, poet, philologist, and academic, who is best known as the author of the classic high fantasy works "The Hobbit", "The Lord of the Rings", and "The Silmarillion".

In August 1914, Britain entered the First World War. Tolkien entered a programme by which he delayed enlistment until completing his degree. By the time he passed his finals in July 1915, Tolkien recalled that the hints were "becoming outspoken from relatives". He was commissioned as a temporary second lieutenant in the Lancashire Fusiliers on 15 July 1915.

On 2 June 1916, Tolkien received a telegram summoning him to Folkestone for posting to France. The Tolkiens spent the night before his departure in a room at the Plough & Harrow Hotel in Edgbaston, Birmingham. He later wrote: "Junior officers were being killed off, a dozen a minute. Parting from my wife then ... it was like a death."

Tolkien arrived at the Somme in early July 1916. In between terms behind the lines at Bouzincourt, he participated in the assaults on the Schwaben Redoubt and the Leipzig salient. Tolkien's time in combat was a terrible stress for his wife Edith, who feared that every knock on the door might carry news of her husband's death. Edith could track her husband's movements on a map of the Western Front.