 Complete the following phrase:  The 6th Missouri Infantry was an infantry regiment of the Confederate States Army during the American Civil War. The regiment was formed on August 26, 1862, when two existing units were combined. Later that year, the regiment was then lightly engaged at the Battle of Iuka and saw heavy action at the Second Battle of Corinth. In 1863, the regiment was engaged at the Battle of Port Gibson, and was part of a major charge at the Battle of Champion Hill. After a defeat at the 