The polish government has a very vassal state mentality in regards to the US, but I doubt they will be officially "sending troops into ukraine" to fight Russia, unless they had solid undeniable evidence that Russia attacked their territory. This was proven when poland acted relatively cautiously when they thought russia fired a missile on its borders a couple of months back. Instead of immediately blaming Russia and calling for Article 4 of NATO's doctrine, poland said that they will investigate who shoot the missile, found out it was done by Ukraine by accident, and let it go. Poland will most likely be very opportunistic as well, if they see there is no hope for Ukraine, they and Hungary may seize land from the westernmost and other parts of Ukraine, such as Lyiv, as Poland has some historical claims to those parts of lands.

Also poland recently doesn't seem to be too "china friendly" as they mentioned that China taking Taiwan would be a "security threat" to the West, similar to how they perceive Russia's mission in Ukraine. China gave a pretty harsh response back to Poland as a response. So I think if a war does start in the Asian region, poland will most likely firmly align with the West/NATO block.