Complex sentence: From 1731 to 1735 Medley was employed on the home station; in 1741 he commanded the in the Channel fleet under Sir John Norris, and in 1742--4 was with Norris as captain of the fleet.
Split into simpler sentences: From 1731 to 1735 Medley was employed on the home station. In 1741 Medley commanded the in the Channel fleet under Sir John Norris, and in 1742--4 was with Norris as captain of the fleet.