In autumn 1806 Alexander instructed Dolgorukov to inspect the army gathered in southern Russia ready for the Russo-Turkish War (1806–1812), but before he had completed his inspection he received orders to come to St Petersburg immediately to discuss the Russian response to the Prussian defeat at Jena–Auerstedt. He galloped to St Petersburg so quickly that several times he overtook his own adjutants and he arrived tired and broken. Alexander received him immediately and had a long meeting with him, but that same evening Dolgorukov fell ill and was put up in a room in the Winter Palace. The doctors diagnosed typhoid fever but could do nothing for him and he died a week later.