As a fan of strategy games, this caught my eye (particularly the WWI/WWII bit). It looked promising, especially the part where you could bolster the morale of your troops with speeches or make pacts with one of the other empires. However, that intrigue quickly ran dry for me, as I found that no amount of strategy can help you in this.
The mechanics are designed so that the enemy will deliberately attack only the player, even when there are significant forces gathered right next to each other. It would be one thing if they all had pacts with each other (although if two of them had pacts with another then that would leave one that had no alliance at all, since you can only forge such treaties with one other country). The lack of equal footing (i.e. the fact that per turn the enemy gets significant reinforcements, whereas you do not, no matter how many cities you control, large or small) makes it difficult just to keep a viable border, let alone expand it. Combine that with the fact that no amount of troops or morale will ensure victory over an enemy unit, even with overwhelming odds, and you have a recipe for continuous failure.
The only way I can see to improve it would be to remove the troop cap for each unit so that one could amass a larger force in one spot and use it as a battering ram. This would make each unit more significant, and reduce the feeling of them being useless against all but the smallest force, which is currently prevalent in the game. When I am unsure as to whether or not my unit bearing the symbol of a tank can overtake the position of one bearing the emblem of a soldier, then what good is the tank?
Do you see what I'm saying? I hope so. I can't very well think of how else to word my advice, or the describe my experience with the game at the moment.