of them to do so as well—which they all did. Harnden joined as a private in the battalion of cavalry which was being organized at Ripon, Wisconsin, in the summer of 1861. At the time, Wisconsin was only authorized to raise one battalion of cavalry . That fall, however, additional recruitment was authorized and the battalion was expanded to a full regiment and designated the 1st Wisconsin Cavalry Regiment. The regiment was relocated to Kenosha, Wisconsin, where they completed their recruitment and formation. Harnden was promoted to sergeant, and then captain of Southeastern Missouri operations (Summer 1862Spring 1863) The regiment mustered into federal service in March 1862, and proceeded to St. Louis for operations in the western theater of the war. After receiving their equipment at Benton Barracks, they were sent down the Mississippi River to Cape Girardeau, Missouri, where their colonel, Edward Daniels, took command of the outpost. Through the Spring and Summer of 1862, they were engaged in scouting and anti-guerilla activity in southeast Missouri. Colonel Daniels, however, was not content to sit in that defensive position, and organized a raid into Arkansas in the summer. Harnden played an important role, leading an advance team of 100 men to Scatterville, Arkansas. There, he surprised a force of about 125 rebels, killing eight and taking fourteen prisoners. They also captured a large number of rifles, horses, and mules. The regiment continued its march through northeast Arkansas, reaching Jonesboro without encountering further resistance. From Jonesboro, Harnden was again sent out in advance to take control of Cache River Bridge, where he captured ten more rebel soldiers and a lieutenant colonel—the inspector general of rebel forces in that part of Arkansas. The regiment then continued to Madison, Arkansas, where they captured a rebel steamship. From Madison, they went to Memphis, Tennessee, where they received orders to return to their post in southeast Missouri. The regiment was split into battalions on their return route, and suffered from ambushes during the march. By the end of September, the regiment was racked with disease, leaving 400 men sick and unable to travel at Cape Girardeau, Missouri. Captain Harnden was then acting as commander of the regiment, with only 2 other officers and 60 men fit for duty during much of that Fall. In the Spring of 1863, Confederate general John S. Marmaduke began his expedition against Union forces in southeast Missouri. The 1st Wisconsin