Samuel Curtis

Samuel Ryan Curtis (February 3, 1805 – December 26, 1866) was an American military officer, and one of the first Republicans elected to Congress. He was most famous for his role as a Union Army general in the Trans-Mississippi Theater of the American Civil War, especially for his victories at the Battles of Pea Ridge in 1862 and Westport in 1864.
After organizing the chaos in St. Louis, Missouri, Curtis was given command of the Army of the Southwest on December 25, 1861, by Maj. Gen. Henry W. Halleck.
In March 1862, his army won the Battle of Pea Ridge in northwest Arkansas.
After Pea Ridge, Curtis' small army moved east and invaded northeast Arkansas, capturing the city of Helena, Arkansas in July. In September, Curtis was given command of the District of Missouri, but Lincoln was soon forced to reassign him, after Curtis's abolitionist views led to conflict with the governor of Missouri. He was reassigned to command the Department of Kansas & Indian Territory.
In October 1863, his son Major Henry Zarah Curtis, adjutant to Brig. Gen. James G. Blunt, was killed by Quantrill's Raiders.
In 1864, Curtis returned to Missouri, fighting against the Confederate invasion led by Maj. Gen. Sterling Price. Curtis gathered the forces of his department together, including several regiments of Kansas State Militia, calling his force the Army of the Border. Price's incursion was halted by Curtis' victory at the Battle of Westport.
https://en.wikipedia.org/wiki/Samuel_Ryan_Curtis