Complex sentence: Seeking relief from military routine, he also studied under Romantic artist Robert Walter Weir and produced nine surviving artworks and spent more time reading books from the library than his academic texts, frequently reading works by James Fenimore Cooper and others.
Split into simpler sentences: Seeking relief from military routine, he also studied under Romantic artist Robert Walter Weir and produced nine surviving artworks. He spent more time reading books from the library than his academic texts, frequently reading works by James Fenimore Cooper and others.