Campaign bug or intentional?

[Biffa]

Background ~ Playing through the Imjin War Campaign as Allies on average/hard.

Early Summer 1599 most of the Peninsular has been recaptured from the Japanese armies with 6 victories and 1 defeat (would include screen shots but I have nothing that can manage .tga's). After a lot of frustration chasing the shredded enemy armies around the map I decided to just march to the sea (Sherman style) so that I could capture the ports and cut off their resupply, this didn't work, the armies behind me are still able to get back to full strength if they are in my regions that they've already taken (bug?) the only army starved of supplies was the one further north that kept moving around avoiding battle in the regions owned by the Allies, this after both of the southern ports have fallen (Naju and Gyeongjen) to my armies, it's pretty annoying chasing armies around the map that don't seem to suffer from attrition and that can quickly get back to full strength in my territory that has freshly fallen to them with no obvious sea supply lines from their own region.

Worse was to come.

I sat two 30-40k Allied armies in the Southern ports awaiting a fresh sea assault from the Japanese who were gathering a new invasion force in Nagoya. In one large force (52,000) they arrived across the sea and landed in Gyeongjen where my largest Army was expecting them, it was a hard fought battle but (I) The Allies were utterly victorious capturing 11,000 and killing 7-8,000, back on the Campaign map, naturally I expected them to be driven back into the sea but hoping that they would disintegrate or surrender, imagine my horror to find that far from being forced back or destroyed this army now appeared behind me in Cheongju (which it still owned), somehow passing miraculously through my forces after being torn apart and rallying to a total force of 35,000.

Luckily soon after the Japanese sued for peace so the campaign was won, but I do remain confused.

I'm wondering if it is a bit like my previous post with my concerns about units rallying while in combat? Maybe it's a bit like that where there's some tactical manoeuver where a force that has been beaten and separated manages to file through in small groups and reforms intact???

Is it based on AP score before they are engaged where the AI can use movement points to reform during the same turn as the battle occurred? I'm not sure.

I've got the screen shot tga's which I could zip to anyone who is interested.

[rbodleyscott]

Armies will be refitted during the winter in provinces they currently own, even if they are not the "original owner". Provinces are pretty large and we assume that blockades are not complete, so some reinforcements will get through by sea.

Similarly because provinces are large, and this is hardly trench warfare, it should be possible for a beaten army sometimes to retreat to provinces other than the one it came from - by taking a different road.