 Complete the following phrase:  Once the Civil War began, Matthies immediately volunteered for the Union Army. On May 14, 1861 he became a captain in the 1st Iowa Volunteer Infantry. Soon after on July 23, 1861 he was appointed lieutet colonel of the 5th Iowa Volunteer Infantry. Matthies first saw action at the Battle of Island Number Ten. He was appointed colonel on May 23, 1862 and fought at the battles of 