It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Leavitt served as the captain of the 16th Maine Volunteers in 1862, becoming the major in 1863. He was mortally wounded in the battle of Laurel Hill, Virginia and died in Washington D.C. in 1864.