Gustav Horn

Count Gustav Horn (1592–1657) was a Swedish field marshal of the Thirty Years' War. He studied warfare under Maurice of Orange, was seriously wounded at the siege of Riga in 1621, and became a field marshal in 1628.

As Gustavus Adolphus's second-in-command, he stopped Tilly's flank attack at Breitenfeld in 1631 after the Saxon allies fled. After the king's death in 1632, Horn and John Banér took command of Swedish forces in Germany.

Captured at Nördlingen in 1634, he was held at Burghausen until exchanged in 1642. He conquered most of Scania in 1644, became Count of Björneborg in 1651, and later governed Livonia.