 Complete the following phrase:  He joined the Union Army as a private in Company E of the 49th New York Volunteer Infantry in June, 1861, rising to orderly sergeant. With the Army of the Potomac his unit participated in battles which included Youngs Mill, Yorktown, Williamsburg, Mechanicsville, Fair Oaks, Gainess Mill, Savages Station, Malvern Hill, Second Bull Run, 