You dare compare the Poles to France? Sacre bleu! The French are no pushovers. They held back the Huns for four years after 1914, and they can do it again. They have better tanks and better planes. So don't worry about the French.
Besides the Brits are coming again, just as they did in 1914. So the north will be secure -- might be stretched a bit thin, probably neeed to plug some holes, move the reserves away from inactive sectors, like the Ardennes... ;-)
Yeah, I have to admit I’m not too worried about the Ardennes. There’s no way you could get those big old tanks through that forest.