The author of the novel 'All Quiet on the Western Front' is Erich Maria Remarque, an 8-letter word, and his pseudonym was Erich Paul AYRES, a 5-letter word. Remarque was born in Germany in 1898 and served in the German Army during World War I. After the war, he wrote the novel 'All Quiet on the Western Front' which was published in 1929. The novel was an immediate success and was later adapted into a movie. Remarque's pseudonym, Erich Paul AYRES, was used to protect his identity from the Nazi regime.