depends who you are. Germany, I usually go with military factories, you will get civilian factories from Austria and I think Czech, not sure on that one. Of course, once you start conquering, lots of civilian factories in western europe. As USA, I build civilian factories for 1-2 years. You definitely need a lot of civilian factories as the US. You will easily have the need for every single rubber available thats left in the world, plus you will run out of aluminum and tungsten, so you will need a lot of imports.
I go the opposite way. As Germany I build civilian factories for about the first year, then switch to milfacs. As USA i never build any civilian factories at all, for two reasons. First, with USA's ridiculously high consumer goods requirement, every civfac you produce raises your CG requirement, so that most of them end up being tasked to produce more consumer goods. Second, USA already has an obscene amount of civfacs from the beginning; it is only their CG requirement that makes it seem like they need more. In fact, once they ramp up to true wartime mode, they have more CIC than any two other countries on the planet...a LOT more.
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