Is a Major IC Reduced to a Minor IC after been conquered?

yes, for capitols and victory cities.  Majors always become minors and any SBR damage stays.

@Vance:

… and any SBR damage stays.

But, damage that stays cannot exceed the maximum that a minor factory can take - any damage in excess of the minor factory damage capacity is discarded.

@osu888:

@Vance:

yes, for capitols and victory cities.�  Majors always become minors and any SBR damage stays.

I confused myself by the question…I understand it goes down to a MINOR…

Is that applicable to Capitols?

absolutely.

UK needs to rebuild it.  so yes.  ouch.

But that also means that Germany CANNOT upgrade it, so it can only ever produce 3 units MAX

Is an upgrade not 20?
UK would need 20, not 30.

@kcdzim:

But that also means that Germany CANNOT upgrade it, so it can only ever produce 3 units MAX

So if Germany conquers London, the Londond IC becomes a minor… and it can NEVER be upgraded? Why?

Only the UK can make it a Major again.
It is for game balance. In the 1st Edition Germany could have done and any power could build a Major on a territory worth 3IPCs. We all found this rule too much and Larry amended it.

@wittmann:

Is an upgrade not 20?
UK would need 20, not 30.

you’re of course correct - I was only pointing out that A) Germany cannot upgrade and B) UK gets stung this way, but yes, thank you for correcting overall cost of UK reupping the factory.

Thank you Kcdzim.

@Walhalla:

@kcdzim:

But that also means that Germany CANNOT upgrade it, so it can only ever produce 3 units MAX

So if Germany conquers London, the Londond IC becomes a minor… and it can NEVER be upgraded? Why?

Because: 
“Industrial Complexes:
Major industrial complexes can only be built on originally controlled territories (this includes upgrading minor ones). Likewise they may not be upgraded when captured. Major industrial complexes are reduced to minor when captured. The original owner of the territory may upgrade it if the territory is recaptured.”

These are the most recent rules.

Is this rule present in 2nd ed. OOB? I’m scanning my rulebook and can’t find where it says to reduce major factories.

@dan123:

Is this rule present in 2nd ed. OOB? I’m scanning my rulebook and can’t find where it says to reduce major factories.

In the Europe 1940 2nd edition rulebook on page 20. The last paragraph.

Thanks! I’ve made a note of it on the page about industrial complexes, which is where I was looking.

a bit off subject
but can you build a minor ic in a territory with a value of 1?

No. it must be 2, major 3 or more and only in originally occupied areas.

@wittmann:

…any power could build a Major on a territory worth 3IPCs. We all found this rule too much and Larry amended it.

Also known as the “US major IC in Norway / S. France” rule change. Other than forcing the US to go Pacific, there was very little you could do to stop the US from doing this by Turn 6/7, which was sort of a “doom clock” for the Axis if it happened.