Anniversary of the Battle of Vienna 1683

Edit: awakened by the Austrian Empire's conflict with a Hungarian Protestant, Imre Thokoly, the Ottoman Sultan Mehmet IV chose to intervene on his behalf and promised him the lands of the Hapsburgs for his assistance in conquering these his greatest enemies.  Meanwhile, the French not only refused to send help, but attacked Hapsburg possessions in Alsace at the same time.

The great victory which ensued on September 11th and 12th, under the leadership of the Holy Roman Emperor, Leopold and thanks to the generous outpouring of support from the Polish King and his people, is largely unsung in the American Republic, and even most American Catholics are woefully ignorant of it.

Holy Roman Emperor Leopold I 1683

Photo, from Chesterton and Friends, blog...

A nice historical summary, here...