Complex sentence: Another of Harrison's goals was to raise the morale of the workmen and locomotive engineers; locomotive crews were assigned to the same locomotives, and senior engineers were allowed to paint their names on their engines.
Split into simpler sentences: Another of Harrison's goals was to raise the morale of the workmen and locomotive engineers. As part of those efforts, locomotive crews were assigned to the same locomotives and engineers with seniority were allowed to paint their names on their engines.