Battle of Czarne

Battle of Czarne[citation needed] Battle of Hammerstein
Part of the Polish–Swedish War (1626–1629)
Hussar from circa 1600-25
Date April 12–17, 1627 Location Czarne (Hammerstein), Poland Result Polish–Lithuanian victory
Belligerents
Polish–Lithuanian Commonwealth	Swedish Empire
Commanders and leaders
Stanisław Koniecpolski	Johann Streiff Maximilian Teuffel
Strength
About 3,000	About 2,500: 1,000 cavalry and 1,500 infantry
Casualties and losses
Unknown	Unknown

The Battle of Czarne, also known as Battle of Hammerstein or Hamersztyn, took place during the Polish–Swedish War (1626–1629), between April 12 and 17, 1627 at Czarne (Hammerstein), in the province of Royal Prussia, Poland. The Polish forces were led by Field Crown Hetman Stanisław Koniecpolski while the Swedes were led by Johann Streiff, Maximilian Teuffel, and Johann Friedrich von Kötteritz.

The battle ended with a Swedish surrender mainly due to low morale of the German mercenaries in Swedish service. These troops started a mutiny and negotiated with the Polish command without Streiff's knowledge and prepared to switch sides to join the Polish army. Being unable to trust their mercenaries the Swedish troops were forced to surrender.^[1]