Blitzkrieg in IC (AoD -> IC)

[unmerged(157031)]

Playing as Germany, I'm now ready to invade Poland. I have enough tanks, more than enough planes and a less-than-ideal number of mot inf. When conducting blitzkrieg there are two methods I could use, however I am still unsure as to which is the most effective:

1- Low concentration breakthrough- What I mean by this is when you attack with a standard arm corps (three med tanks) with tac. interdection support and allow it to have the highest possible attacking efficiancy. With the high stacking penalty you will lose more org and str when attacking with a large amount of units, so the main advantage of this method is the attacking unit recives less damage, and the rest of the stack in the province recieves none. This takes a long time however; longer than a week in some cases, which somewhat detracts from the purpose of blitzkrieg.

2- High concentration breakthrough- Using all units in the tile to attack a single province with tac. support. This will reduce the attacking efficancy in to single figures, so you lose a lot of org and str. I'm certain it is much faster to use this method, however casualties will be higher and encircling troops will have less org to defend with.

So, which is better?

 

[eleven_west]

The below is HOI2-DD info I don't suppose it has changed in IC

- you don't get the combined arms bonus with a 3 tank division korps. You need to have a 2-1 or 1-2 ratio to get extra efficiency.
Then, if you use your general staff correctly chances are that you won't have to suffer stacking penalties, have a field marschall nearby and a few generals to attack from different provinces and you'll get 3 or 4 x stacking efficiency. You can through the sum of your attacking generals from each province, doubled I've seen attacks with 100 divisions/no stacking penalty this way. You have to keep mobile reserves to exploit the breakthroughs and seal the pockets.
- Using all units in a tile to attack is not efficient unless you are certain of an easy breakthrough, you will often have to feint an attack somewhere, draw the enemy forces and then concentrate a secondary stronger attack somewhere else. Especially in Barbarossa around 1942

 

[unmerged(157031)]

The below is HOI2-DD info I don't suppose it has changed in IC

- you don't get the combined arms bonus with a 3 tank division korps. You need to have a 2-1 or 1-2 ratio to get extra efficiency.
Then, if you use your general staff correctly chances are that you won't have to suffer stacking penalties, have a field marschall nearby and a few generals to attack from different provinces and you'll get 3 or 4 x stacking efficiency. You can through the sum of your attacking generals from each province, doubled I've seen attacks with 100 divisions/no stacking penalty this way. You have to keep mobile reserves to exploit the breakthroughs and seal the pockets.
- Using all units in a tile to attack is not efficient unless you are certain of an easy breakthrough, you will often have to feint an attack somewhere, draw the enemy forces and then concentrate a secondary stronger attack somewhere else. Especially in Barbarossa around 1942

While the second point is true, as of AoD the stacking penalty is much higher. Even with just three units you get a stacking penalty of -33. I think it's supposed to represent that combat formations have depth and not just width, so even though you're brining 100x more men than the enemy only a proportianally small amount of them will be firing at any given point. The rest will be in reserve.