I'm convinced this is a bug.
I'm playing Iron Cross over AoD 1.07 and from time to time a certain country's units seem to go "uber" for no apparent reason.
My first game as France, I sat there during the phony war grimly preparing for the onslaught of Fall Gelb (I wasn't expecting it to go well, with Germany having 200IC to my 20Ic during the first 4 years of the scenario). At first Germany seemed to be advancing normally, but then something yellow appeared out the corner of my eye.
A single Polish infantry division had somehow gotten into Bavaria and was fighting a stack of German armour, across a river. The expected slaughter was taking longer than normal, i thought maybe they had Victory or Valhalla set. Then the armour corps starts retreating! The war ended in May 1940 with Poland annexing Germany. I made my own attack and managed to take the part of Germany that is west of the Rhine. Poland got the rest.
My next game was as Germany, things were normal enough until the fall of Warsaw. Then Chuck Norris mode also seemed to be activated. Encircled divisions cut off from supply would hold out for a month despite 4:1 odds. They just seem to take 1% of normal Org and Strength loss. The campaign to seize the final VP in Danzig took until May 1940. A successful attack on a polish province (with superior tech, armour and 3:1 or 4:1 odds and no terrain barriers) would normally produce kill-loss ratio 10:1 in favour of the Germans on the AoD engine. Now the casualty report was reversed, me loosing 10x as many on a sucessful attack.
By the time i'd annexed them, Germany had lost 1000 mp and i had to use the Manpower cheat to keep playing.
Strangely, France, Belgium, Netherlands, Luxemburg, Yugoslavia and Greece put up no more resistance than normal. I thought my problems were over.
I managed a successful Sealion and again, things were quite normal, until i was trying to capture the final mainland province of Stornoway. Suddenly, UK soldiers become bullet proof, exept for a single square inch of flesh around the big toe area. The battle of stornoway (18 mountain-ART vs 6 INF ) lasted two months and again was extroadinarily costly. Despite shore bombardment, and the fact the beseiged troops being completely out of supply (full 50% lack of supply penalty) due to all convoys being sunk.
It's now 1942 and I've had a DoW from USA , and , a month later , the USSR. I'm preparing to invade Canada from Greenland, having built a nice little Maginot line on the Bug river to hold the Soviets at bay. Unfortunately, eight Indian infantry divisions have been landed in Gibraltar and been given as expeditionary forces to UK, and have now gained Uber attributes. A stack of 18 mountain INF dug into Seville, with a river and hills between them and the enemy, was unable to hold them at bay, so it looks like these guys are going to get me annexed. In fact, they beat my defence without any apparent change to their org or strength bars.
I reloaded as UK to try and figure what it is that makes these guys so special, but i can't see any reason for it. Ground defence efficiency 80%, attack efficiency 100%. UK has 1 tech team slot and India 3. The troops that are killing my forces have an estimated supply efficiency of 5%, and they are almost out of supplies as UK doesn't have enough convoys to maintain the depot.
So, this game appears to be finished. I'm not going to find out what level 5 infantry looks like because i'll be annexed before i can complete that part of the tech tree. The only possible solution i can think of is to use AcceptAll cheat and force UK to make peace?