“Tatars fought in Polish armies in the defining battles of the age, for example helping to defeat the crusading Teutonic Knights at Grünwald in 1410. They came to form an elite part of the officer class. Muslims were thus among the Polish horsemen who drove the Ottomans from the gates of Vienna.
The Muslim influence upon the rescuers of Christendom went far deeper than this. The very tactics of the Polish cavalry, regarded at the time as the best in Europe, were developed in contact with, and indeed copied from, the Tatars. Polish nobles bore curved swords.”
►http://www.nybooks.com/blogs/nyrblog/2011/aug/10/anders-breiviks-historical-delusions