I find the connection between J.R.R. Tolkien’s military service and his writing to be very interesting. Elliot Ackerman has written an interesting article for Task & Purpose.
Perhaps it’s not all that surprising that Tolkien would emerge from the horrors of the First World War and create such a comprehensive new world after intimately witnessing the destruction of an old one. That conflict features prominently throughout his books. Famously Tolkien based the hobbits of Middle-Earth, who burrow their homes into the shire and are known for their pure hearts and steady reliability in pursuit of a quest, on the working class British Tommies among whom he served in the trenches. “I have always been impressed,” he explained in later years, “that we are here, surviving, because of the indomitable courage of quite small people against impossible odds.” In a book of his correspondence, Tolkien noted how the Dead Marshes, which lead up to Mordor, with their pools of muck and floating corpses, “owe something to Northern France after the Battle of the Somme.”
You can read the full article here.