600th anniversary of the Battle of Grunwald

Today it is exactly 600 years from the famous Battle of Grunwald (July 15, 1410). It was one of the most important battles in Polish history (and one of the best recognizable), where the Kingdom of Poland joined with Grand Duchy of Lithuania were opponents to the Order of the Teutonic Knights, in effect decisively defeated. This is an official Polish website about the anniversary, you should have a look if interested: 600th Anniversary of the Battle of Grunwald (no longer active!).