did the author of these book fight in any war?
Yes, First World War
J. R. R. Tolkien
 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. 
what's the ring called in lord of the rings The "One Ring" what is its purpose? The One Ring is a central plot element in "The Lord of the Rings", it is a magic ring that grants the wearer invisibility what does it look like? The Ring seemed to be made simply of gold who are some of the ring bearers? The hobbits Bilbo, Frodo, and Sam who are they? They are the hobbits what does that mean? Hobbits or Halflings are a fictional human-like race in the novels of J. R. R. Tolkien, about half the height of humans. which novels has the author penned? "Sketch of the Mythology",  "The Hobbit" and "The Lord of the Rings" from where did the second ring bearer get its name? Frodo's name comes from the Old English name "Fróda", meaning "wise by experience". who are his ancestors? UNANSWERABLE what sort of character is he? Frodo's character as combining "courage, selflessness, and fidelity"
wiki:7753553
J. R. R. Tolkien [SEP] First World War
He was commissioned as a temporary second lieutenant in the Lancashire Fusiliers on 15 July 1915. He trained with the 13th (Reserve) Battalion on Cannock Chase, Staffordshire, for 11 months. In a letter to Edith, Tolkien complained: "Gentlemen are rare among the superiors, and even human beings rare indeed." Following their wedding, Lieutenant and Mrs. Tolkien took up lodgings near the training camp. 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.