How do Poles use cavalry against tanks? A person can't be stupid, and the whole country is not smart.

This is the decision maker's mistake, not seeing the huge role that tanks will play in the war.

Still keeping the old concept of cavalry supremacy, not updating ideas and developing equipment.

Not all Poles don't know, but the decision-makers don't know or are unwilling to change.

This is like the Qing dynasty, which closed its doors to the outside world. In the Battle of Baliqiao, there appeared a musket that Sengqin commanded cavalry to fight against the British and French allied forces.