Complex sentence: Francisco Burdett O'Connor (12 June 1791-5 October 1871) (Francis Burdett O'Connor) was an officer in the Irish Legion of Simón Bolívar's army in Venezuela, and later became chief of staff to Antonio José de Sucre and minister of war in Bolivia.
Split into simpler sentences: Francisco Burdett O'Connor (12 June 1791-5 October 1871) (Francis Burdett O'Connor) was an officer in the Irish Legion of Simón Bolívar's army in Venezuela. He later became chief of staff to Antonio José de Sucre and minister of war in Bolivia.