Complex sentence: The 12th Kentucky Cavalry was organized at Caseyville and Owensboro, Kentucky and mustered in on November 17,1862 for three years under the command of Colonel Quintus C. Shanks.
Split into simpler sentences: The 12th Kentucky Cavalry was organized at Caseyville and Owensboro, Kentucky and mustered in on November 17,1862. It mustered in for three years under the command of Colonel Quintus C. Shanks.