He was again wounded at Lützen in 1632, and on his recovery was made a major in his uncle's regiment. Shortly afterwards he became a lieutenant-colonel of cavalry. He did good service at the first battle of Nordlingen (1634), and at the storming of Kaiserslautern in the following year won his colonelcy by a feat of arms of unusual brilliance, a charge through the breach at the head of his heavy cavalry.