Complex sentence: The achievements of arms used in the Navy are usually constituted by a shield, toped by a naval crown and they can also include crosses and collars of orders, decorations with their ribbons, trophies, mottos and war cries.
Split into simpler sentences: The achievements of arms used in the Navy usually consist of a shield topped by a naval crown. They can also include crosses and collars of orders, decorations with their ribbons, trophies, mottos and war cries.