On 20 February 1761, the King promoted Werner to generalleutnant. On 3 September 1761, he captured a Swedish position at the village of Uckerland, taking eight guns and 600 prisoners. In 1761, he joined the army of the Prince of Wurttemberg, which was to resume efforts to relieve the besieged fortress of Kolberg but had hardly any supplies. In September 1761, Werner rode from Platens to meet the Russian troops moving westward from Poland. On 12 September, he fought with 2,000 men against the Russians at Treptow on the Riga river. After heavy losses, he was captured by the Russians and imprisoned in Königsberg, where he remained until the end of 1762. When Peter III became Tsar, he freed Werner, but tried to convince him to join the Russian army. Werner returned to Frederick's army in Silesia. There he again became commander of a corps, which first marched from Upper Silesia to Moravia, then joined the army the Duke of Bevern at Peterswalde in Lower Silesia. On 16 August 1762, he and Zieten routed an army of 47,000 commanded by Leopold Joseph von Daun near Reichenbach. He then moved back to Upper Silesia. After the war, Werner became the commander of Naugarten.
