You have nice ideas, but I don´t like that campaign (only my personal opinion)
-Hard to feel that you are really at the 2nd world war without airplanes, ships,but instead with people from the stoneage fighting with an axe
-In the first missions, you have like nothing to do. Example first mission: you have to wait that long until anything will happen. When something starts to happen, it´s just a huge spam of everything while you have only the control over some units(Ai vs Ai).
-Wrong historical points(Poland has defended the longest time of all countries against their enemy. The "Blitzkrieg" started at the 1st September and Warsaw has surrenderd at 27th September
) so with one HUGE rush of knights it looks for children like Germany had conquered the whole world in 2 days
-Ugly Letters in map. You should rather give the countries their color like german the black one,polan white, russian blue.... instead of writing on the half map P O L A N D with some trees, that doesn´t look good in my opinion
[-You should implement france and England as ai players that are attacking Germany, but 10 meters before that, they move around and go back
(Historical Joke) ]
[-Don´t like the Campaign map, but only because it´s not written in Latin letters
]
Why I basicly don´t like to play that campaign is, becuase it´s "boring". Like I said at the first lines the player is more watching stuff, instead of fighting/defending
Good points:
+Still that there are many content fails in that campaign, I see that you really like the history and you researched a lot of names and places to implement it in your campaign
+Good scripting ideas and features(Army of Ussr appears in Eastpoland, while german is attacking westpoland)
+Terrain and Object placements are ok(not the letter of trees
)
+Variety of maps and missions