J. R. R. Tolkien members of the informal literary discussion group known as the Inklings. Tolkien was appointed a Commander of the Order of the British Empire by Queen Elizabeth II on 28 March 1972. After Tolkien's death, his son Christopher published a series of works based on his father's extensive notes and unpublished manuscripts, including "The Silmarillion". These, together with "The Hobbit" and "The Lord of the Rings", form a connected body of tales, poems, fictional histories, invented languages, and literary essays about a fantasy world called Arda and Middle-earth within it. Between 1951 and 1955, Tolkien applied the term "legendarium" to the
J. R. R. Tolkien and Lúthien. On 3 November 1920, Tolkien was demobilized and left the army, retaining his rank of lieutenant. His first civilian job after World War I was at the "Oxford English Dictionary", where he worked mainly on the history and etymology of words of Germanic origin beginning with the letter "W". In 1920, he took up a post as reader in English language at the University of Leeds, becoming the youngest professor there. While at Leeds, he produced "A Middle English Vocabulary" and a definitive edition of "Sir Gawain and the Green Knight" with E. V. Gordon; both became academic