I work with a Polish man that I speak with regularly on the topic of the European Islamination. As he discussed many things, one thing he stresses is Poland's alliance with the Catholic Church and their combined fight against Islam. Poland and Polish people in general are looked upon as being aggressive in their drive to halt the Muslim invasion.
There is a thread on Why 9/11? In the Terrorism forum that points to Poland’s engagement of Muslims in the 1600s to save Europe.
The same Wikipedia article mentioned previously about the Battle of Vienna notes:
The battle was won by the combined forces of the Holy Roman Empire and the Polish–Lithuanian Commonwealth, the latter being only represented by the forces of the Crown of the Kingdom of Poland (the march of the Lithuanian army was delayed, as a result of which they arrived in Vienna after it was relieved.
The battle is also notable for including the largest cavalry charge in history.
Another web page I found discusses the Polish Cavalry from the beginning through Napoleonic Wars.
http://www.napolun.com/mirror/napole...lish_army.html
Pretty interesting read and mention that many military formations and tactics used through modern history were the result of either the Poles, or fighting them. Also sheds some light on why the Russians and Poles hate each other. Russia was pretty harsh against the Poles because of past aggressions, plus they feared a Polish uprising.
Working with Poles overseas, I can attest they are solid in their stand to fight.