Complex sentence: The Legionnaires originally used Flying Belts purchased their sponsor R.J. Brande when the Legion was founded it was considered the state-of-the-art in 30th century personal transport technology.
Split into simpler sentences: The Legionnaires originally used Flying Belts purchased by their sponsor R.J. Brande when the Legion was founded. It was considered the state-of-the-art in 30th century personal transport technology.