Complex sentence: The Spanish commander called for the Scots to surrender and avoid a final assault warning that if they did not no quarter would be given, after negotiations the Scots were allowed to leave with their guns and the colony was abandoned for the last time.
Split into simpler sentences: The Spanish commander called for the Scots to surrender and avoid a final assault, warning that if they did not no quarter would be given. After negotiations the Scots were allowed to leave with their guns, and the colony was abandoned for the last time.