Australia: Queensland – The AHS Centaur is Sunk by a Japanese Submarine
On this day in 1943 off the Queensland coast (Australia), the AHS Centaur is torpedoed by a Japanese submarine and sunk. The Centaur was a hospital ship, with 268 of the 332 people on board killed as a result of the attack. The submarine responsible for the attack was the I-177.
For more, visit:
http://en.wikipedia.org/wiki/AHS_Centaur
Poland – Battle of Chmielnik
On this day in 1241, invading Mongol forces overwhelmed Polish forces in the Battle of Chmielnik. This battle took place during the wider Mongol invasion of Poland which had begun in 1240. As a result of the battle, the Polish city of Krakow was plundered.
For more, visit:
http://en.wikipedia.org/wiki/Battle_of_Chmielnik
http://en.wikipedia.org/wiki/Mongol_invasion_of_Poland
Also the Book:
The Mongols – A History, by Jeremiah Curtin
History for Today 