Together with the Russian General Toll and the Austrian General Radetzky he subsequently played a major part in designing the Coalition's new campaign plan, participating in the Battles of Dresden, Kulm, and the decisive Battle of the Nations, as well as the subsequent invasion of France. His influence during this period was significant, and he is generally considered the leading Prussian voice in the Coalition's military strategy. Even when he was briefly ill, the monarchs are said to have gathered at his bedside to continue discussing maneuvers. Following the Battle of the Nations, the Swedish Crown Prince Jean Bernadotte, formerly a French Marshal of the Empire, reportedly gave Knesebeck public credit for the victory.