Complex sentence: The 3rd Kentucky Cavalry was organized at Calhoun, Kentucky and McLean County, Kentucky and mustered in for a three year enlistment on December 13,1861 under the command of Colonel James Streshly Jackson.
Split into simpler sentences: The 3rd Kentucky Cavalry was organized at Calhoun, Kentucky and McLean County, Kentucky and mustered in for a three year enlistment on December 13,1861. It was mustered in under the command of Colonel James Streshly Jackson.