Complex sentence: He became Member of Parliament for Horsham in 1776, and having been promoted to lieutenant-general on 29 August 1777, he became one of the Founder Knights of the Order of St. Patrick in 1783.
Split into simpler sentences: He became Member of Parliament for Horsham in 1776. Promoted to lieutenant-general on 29 August 1777, he became one of the Founder Knights of the Order of St Patrick in 1783.