In the historic world war map, surviving, and winning, as Poland is VERY HARD. You are surrounded by two superpowers and it is very likely that one, or maybe even both of them will attack you.
In order to survive, you want to ally with both of them. If you ally with them, then you can focus on expanding into Slovakia, Latvia, and maybe Danzig.
But most likely at least one of them will attack you. If one of them does, this is what you should do:
IF GERMANY ATTACKS:
Germany is the strongest nation in the game, so you have to be quick. If you ever played as Germany, you might know that the province of Kustin on the polish border has no units. If you are Poland, I will recommend you send some motorized units and tanks there and then rush to Berlin, which at the start is only defended by one infantry. Once you are inside of the country, you can wreak havoc. Almost all of Germany's units start near the west or the east, with little to nothing in the middle. So once you get inside of the country, you can use your fast units to conquer him from the inside. Remember only to use fast units to attack as you want to be quick. Many of Germany's big stacks have militias and he might not know to split the stack, you do not want his reinforcements to arrive.
IF SOVIET ATTACKS:
I will complete this part later.
In order to survive, you want to ally with both of them. If you ally with them, then you can focus on expanding into Slovakia, Latvia, and maybe Danzig.
But most likely at least one of them will attack you. If one of them does, this is what you should do:
IF GERMANY ATTACKS:
Germany is the strongest nation in the game, so you have to be quick. If you ever played as Germany, you might know that the province of Kustin on the polish border has no units. If you are Poland, I will recommend you send some motorized units and tanks there and then rush to Berlin, which at the start is only defended by one infantry. Once you are inside of the country, you can wreak havoc. Almost all of Germany's units start near the west or the east, with little to nothing in the middle. So once you get inside of the country, you can use your fast units to conquer him from the inside. Remember only to use fast units to attack as you want to be quick. Many of Germany's big stacks have militias and he might not know to split the stack, you do not want his reinforcements to arrive.
IF SOVIET ATTACKS:
I will complete this part later.