Complex sentence: Field Marshal Lord Cobham, a leading soldier, used his own connections to build up an opposition after 1735; young William Pitt joined Cobham's faction and soon became an articulate enemy of Walpole.
Split into simpler sentences: Field Marshal Lord Cobham, a leading soldier, used his own connections to build up an opposition after 1733. Young William Pitt joined Cobham's faction and soon became an articulate enemy of Walpole.