So I'm playing as Germany right now and I have experimented with how the russians would react to me retreating. So far they are unwilling to advance even after they spam-built like 30 t-34 divisions and howitzers and infantry and i-16s. Thats the only vehicles they build and now they're getting pummeled by even the italians. I have never seen a single air unit other than i16s and tb3s, no tank destroyer other than zis-30 even after they researched su-85, only tank is t-34 (no kv-1s, no is series, no upgraded t34s. Also when Britain and France did the 'normandy landings', they refused to advance further than just west of paris even though I wasn't putting up any resistance. I have no units in the Stalingrad area and even though they have massed armies north and at Stalingrad, they have not advanced for 3 years! Is the ai just being dumb as usual or is there a way to increase the 'brain capacity' of the ai?