Complex sentence: Webb integrated the "CSA James River Squadron", operating upon the homonymous river from Norfolk, which chieftain was the "Flag-Officer" Franklin Buchanan on the "CSS-Virginia" streamer ironclad (called also "CSS-Merrimac").
Split into simpler sentences: Webb integrated the "CSA James River Squadron", operating upon the homonymous river from Norfolk. Squadron's chieftain was "Flag-Officer" Franklin Buchanan, on the "CSS-Virginia" streamer ironclad (called also "CSS-Merrimac").