Another thing: I tend to wait until I've started Research on Construction II and Dispersed II for the focus 'Four Year Plan' so I use the two 100% bonuses from it on Construction III and Dispersed III. You get more milktary factories, your allies get more military factories, and you get puppets who give you Military Factories and cheaper resources. I hate people who take 'German War Economy', because 'Integrate War Economies' is just so clearly better. Also, never actually bother to 'Align Hungary' or 'Align Romania' as those focuses Auto-bypass when they're in your faction. The focus Westwall and its subfocuses are basically useless in singeplayer, in my opinion.