1,000 Poles went to fight on the side of America, as well as Tadeusz Koscziusko. Why did the polish do this? Did they just hate Britain? Support American democracy?
/u/kieslowskifan has previously written about Tadeusz Kościuszko, explained how he came to America and how he's remembered.
Hopefully someone will see fit to expand on these themes and answer the OP directly.