Complex sentence: He was born in to the lowest levels of European society, the orphan of a prison convict, uneducated, frail and thin, he was the anti-hero of the traditional military commander adventurer.
Split into simpler sentences: He was born in to the lowest levels of European society. The orphaned son of a prison convict, uneducated, frail, and thin, he was the anti-hero of the traditional military commander adventurer.