Complex sentence: Wagner went on to write scenarios for Charles Ray, Hal Roach and Mack Sennett, and wrote and directed films for Will Rogers, including "Two Wagons, Both Covered" (1924).
Split into simpler sentences: Wagner went on to write scenarios for Charles Ray, Hal Roach and Mack Sennett. For Hsl Roach he wrote and directed films for Will Rogers, including "Two Wagons, Both Covered" (1924).