 Complete the following phrase:  The 1st Missouri Cavalry Regiment fought at the Battle of Pea Ridge, Arkansas from March 68, 1862, then moved east of the Mississippi River and was dismounted. On May 4, 1862, the regiment contained 536 effectives. After fighting at the Battle of Iuka, Mississippi on September 19, 1862, the regiment participated in the Battle of Corinth, Mississippi on October 34, 1862, where it lost 9 killed and 54 wounded. It was then assigned to Martin E. Greens Brigade, Department of Mississippi and East Louisiana. The regiment fought at the 