I downloaded, installed and played a division level battle. All was well and I was quite impressed with the decisions made by the AI. Artillery was effective. Cavalry was quite well-behaved and made meaningful contributions to the effort.
Jackson put me in reserve and I generally obeyed the AI's intent but cheated a bit because I became bored after some time and wanted in on the action.
Very impressive! I will play again as soon as possible.
I'm not quite sure how to deal with the drills.csv but will explore that some this time around.