Napoleon Bonaparte saw the Prussian king as a military commander of the first rank; after Napoleon's victory over the Fourth Coalition in 1807, he visited Frederick's tomb in Potsdam and remarked to his officers, "Gentlemen, if this man were still alive I would not be here". Napoleon frequently "pored through Frederick's campaign narratives and had a statuette of him placed in his personal cabinet". Frederick and Napoleon are perhaps the most admiringly quoted military leaders in Clausewitz' "On War". Clausewitz praised particularly the quick and skillful movement of his troops.