Complex sentence: It has been claimed that the victorious Ottomans paraded with 500 severed heads through Cetinje after the battle, and also attacked the Cetinje monastery and the palace of Ivan Crnojević.
Split into simpler sentences: It has been claimed that the victorious Ottomans paraded with 500 severed heads through Cetinje after the battle. They also attacked the Cetinje monastery and the palace of Ivan Crnojević.