Complex sentence: All the prisoners taken following the conflict were released by Winfield Scott at the end of August 1832, except Black Hawk who was taken east, where in 1833 he dictated his autobiography, the first Native American autobiography published in the United States.
Split into simpler sentences: All the prisoners taken following the conflict were released by Winfield Scott at the end of August 1832, except Black Hawk who was taken east. In 1833 he dictated his autobiography, the first Native American autobiography published in the United States.