Complex sentence: He left Rome to joins in the wars of Italian independence; and was wounded in the Battle of Cornuda at Treviso, where he was awarded a medal of military valor, and rose to level of captain.
Split into simpler sentences: He left Rome to join in the wars of Italian independence; and was wounded in the Battle of Cornuda at Treviso. For this effort he was awarded a medal of military valor, and rose to level of captain.