Hehe... I think PG1 has the huge advantage of the quite good voiceacting for both briefings and debriefings (even if you lost). It just felt so much better to hear a guy mock you when you lost, in a strongly accented German of course. Or when he praised you for capturing Moscow, but only to be crestfallen when he informed you that the Soviets recaptured it in the winter.

That felt good. And of course the little 'action movies' whenever a battle took place,so you could see little men get blasted to bits, or tanks get holed or even exploding to lumps of metal (PzIII and IVs looked particularly gruesome, as well as that Polish TP-7 I think).