Complex sentence: The battery was organized at Camp Dick Robinson from Company D, 3rd Kentucky Infantry and mustered in for a three year enlistment on October 8,1861 under the command of Captain John M. Hewitt.
Split into simpler sentences: The battery was organized at Camp Dick Robinson from the Company D, 3rd Kentucky Infantry and mustered in for a three year enlistment on October 8,1861. It was mustered in under the command of Captain John M. Hewitt.