Thanks for all the encouraging huzzahs!
(I did notice the date error on one of the titles but of course only after rendering the films and uploading them - Dohhh!)
The odd Austrian retreat in the town in Pt4 occurs because the town is being overwhelmed at the N , W and S gate by French regiments, The Ai knows it and responds although the animation of the french is playing catch up, we see the french arriving in the town center. They are wearing their (briefly adopted) white uniforms so could be confused with the escaping Austrians.