Complex sentence: HMS "Brecon" was a Hunt class destroyer of the Royal Navy that saw service in the Second World War, one of two ships in the fourth subgroup of the class, built to a radically different design from other ships in the Hunt class.
Split into simpler sentences: HMS "Brecon" was a Hunt class destroyer of the Royal Navy that saw service in the Second World War. These ships were built to a radically different design from other ships in the Hunt class.