Complex sentence: He volunteered for the Confederate States Army on the outbreak of the Civil War in 1861 and was appointed Captain to the brigade of Henry A. Wise and, later, to the brigade of his uncle, Alexander W. Reynolds.
Split into simpler sentences: He volunteered for the Confederate States Army on the outbreak of the Civil War in 1861. He was appointed Captain to the brigade of Henry A. Wise and, later, to the brigade of his uncle, Alexander W. Reynolds.