Yes, the US Army Center for Military History analyses are worth looking at.
On the eastern front, partisan groups were operating in division and corps strength, and the Germans countered with similar force levels. In Russia and Yugoslavia they were heavily bolstered by external military aid, and effectively functioned as conventional military forces.
In France, Greece, the Netherlands etc, they were just pin pricks. Useful for intel gathering and morale boosting, but not much more and major resistance groups (such as at Vercours) were ruthlessly exterminated. Population densities, force levels and levels of collaboration were much more in the Germans favour in the west.
The threat and reality of atrocity worked fairly well as a security measure in the west (see force ratios above), but made almost no difference whatsoever in the east apart from to raise the general level of barbarity, popular resistance and increase the desire for revenge.
The main lesson being that repression works well against civilian populations, and to be successful partisans require the operational support of major external organised military forces.
The exception to this would appear to be Afghanistan, where the entire population seems to be in a permanent state of insurrection:)