Complex sentence: After the siege the duc de Boufflers bombarded the neutral city of Liege, whilst the duc de Luxembourg captured Halle, and scored a minor victory against the Prince of Waldeck at the Battle of Leuze in September.
Split into simpler sentences: After the siege the duc de Boufflers bombarded the neutral city of Liege. The duc de Luxembourg, meanwhile, captured Halle, and scored a minor victory against the Prince of Waldeck at the Battle of Leuze in September.