Edited sentence: During prisoner exchanges nothing was put on  paper.The Union was paranoid about anything that could recognize the confederacy as a nation.The agreed upon system was 2 privates = 1 corporal, 4 privates = a sergeant, 8 privates = a captain, 10 privates = a major corporal, 25 privates = a major, 30 privates = a commanding major, 60 privates = a commanding general, 100 privates = a brigadier general, and 200 privates = a major general