Are you interested in how these changes specifically affected the or 1933 scenarios, or04 ?
Almost every interface element—from unit strength bars to production check-boxes—was updated with detailed tooltips displaying equipment levels, modifiers, and attributes. Patch 1.03 Darkest Hour
Because of these deep engine changes, saved games from previous versions (1.0 to 1.02) are with Patch 1.03. Most older mods also require an update to function with the new misc.txt and modifiers.csv structures. Are you interested in how these changes specifically