1911 Encyclopædia Britannica, Volume 28… (1911)
“ He was at Pima with the king, and advised him against absorbing the Saxon prisoners into his own army. He accompanied Schwerin in the advance on Prague in 1757 and took a conspicuous part in the battle there. After the defeat of Kolm, however, Winterfeldt, whom Frederick seems to have regarded as the only man of character whom he could trust to conduct the more delicate and difficult operations of the retreat, found himself obliged to work in close contact with the king’s brother, Prince William, the duke of Brunswick-Bevern, Zieten and others of his enemies. ”
