Complex sentence: The north-eastern sortie through St Martins Gate was commanded by the Duke of Hamilton and attacked the Parliamentary lines at Perry Wood, the south-eastern one through Sidbury Gate was led by Charles II and attacked Red Hill.
Split into simpler sentences: The north-eastern sortie through St. Martin's Gate was commanded by the Duke of Hamilton and attacked the Parliamentary lines at Perry Wood. The south-eastern one through Sidbury Gate was led by Charles II and attacked Red Hill.