Merrill's Horse was the 2nd Missouri Cavalry Regiment (existed 9/61 thru 9/65). Despite the fact that the 2nd Missouri State Militia Cavalry Battalion (existed 3/62 thru 3/63) had a much bloodier experience (almost same number of KIA in just 25% of the time of existence), it should not be confused with the much more famous 2nd Missouri Cavalry Regiment. 2nd MSM Battalion also should not be confused with the 2nd Missouri State Militia Cavalry Regiment (existed 12/61 thru 4/65). Easy mistake to make--it took me a few years of serious, in-depth research to get the Missouri Federal unit hodge podge somewhat straight in my mind...and I have a lot more that I haven't figured out and a good bit more that I will never get figured out. What a mess the postwar U.S. government had sorting out which Missouri Federals were eligible for pensions and which weren't (it took special commissions, Congressional investigations and acts of Congress to wade through it all).