Lennart Torstensson, Count of Ortala, Baron of Virestad, was a Swedish Field Marshal and military engineer.

The Battle of Chemnitz took place near the town of Chemnitz, in Electorate of Saxony, during the Thirty Years' War. Swedish forces under Johan Banér inflicted a crushing defeat on Rodolfo Giovanni Marazzino who commanded the Saxons and an Imperial detachment under Johann Christoph von Puchheim who was captured by the Swedes.