Scanian War

The Scanian War (1675-1679) is generally taken to mark the beginning of the decline of Sweden as a Great Power.
The battle of Fehrbellin saw Frederic William, elector of Brandenburg and duke of Prussia defeat a Swedish army under Karl Gustav Wrangel that had invaded Brandenburg late in 1674
The Battle of Lund took place during the Danish invasion of Scania and saw Charles XI of Sweden inflict a bloody defeat on the Danish army, preventing them from easily recapturing the Danish provinces lost in 1660 and 1645
The Peace of St. Germain (29 June 1679) ended fighting in the Scanian War between Sweden and Frederick William, elector of Brandenburg