The old "defense" values were largely replaced by specific modifiers in modifiers.csv , allowing for greater differentiation between light and heavy units. For instance, armored units now excel in open terrain but lose efficiency in "compartmentalized" environments like woods.
A major balance change introduced diminishing returns for "optimal force ratios," limiting the effectiveness of "doom stacks" (massive single-province troop concentrations). Patch 1.03 Darkest Hour
The patch introduced several "quality of life" and engine-level features: The old "defense" values were largely replaced by