 Complete the following phrase:  William Warren Lowe 12 October 1831 - 18 May 1898 led a volunteer regiment of cavalry from Iowa in the Union Army during the American Civil War. He graduated from the United States Military Academy in 1853. He served as a cavalry officer on the frontier in Texas in 18551861. When the Civil War broke out, Lowe fought at First Bull Run. He organized the 5th Iowa Cavalry Regiment and led it at 