Complex sentence: Arthur Benton was a historian who worked with neurologist Morris Bender during his military assignment to the San Diego Naval Hospital and, through his treatment of servicemen who suffered from traumatic brain injuries, led to his development of the Benton Visual Retention Test.
Split into simpler sentences: Arthur Benton was a historian who worked with neurologist Morris Bender during his military assignment to the San Diego Naval Hospital. His experiences in the treatment of servicemen who suffered from traumatic brain injuries led to his development of the Benton Visual Retention Test.