This is the closest match you'll find in Booth's book, but if he was born in 1852 it seems unlikely that this is your man. No mention of any drumming or bugling, and he would be enlisting at the age of 9.

Romain, F., Pvt. Watson Batty. La. Arty. En. Aug. 15, 1861, St. Joe. Roll Sept. and Oct., 1862, Present. Federal Rolls of Prisoners of War, Paroled Port Hudson, La., July _, 1863. Roll of Prisoners of War of divers companies and regiments in Hospl. of C. S. A., Paroled Meridian, Miss., May 12, 1865. Res. New Orleans, La.