reconciling these two requirements, in each case as it arose, was always the principal secret of his generalship. At first his precautions (judged by events and not by the probabilities of the moment) were excessive, and the offensive mass small. But the latter was handled by a general untroubled by multiple aims and anxieties, and if such self-confidence was equivalent to 10,000 men on the battlefield, it was legitimate to detach 10,000 men to secure it. These 10,000 were posted 8 m. out on the dangerous flank, not almost back to back with the main body as Vandamme had been,[9] and although this distance was but little compared to those of his later campaigns, when he employed small armies for the same purpose, it sufficed in this difficult mountain country, where the covering force enjoyed the advantage of strong positions. Of course, if Colli had been better concentrated, or if Beaulieu had been more active, the calculated proportions between covering force and main body might have proved fallacious, and the system on which Napoleon's relative superiority rested might have broken down. But the point is that such a system, however rough its first model, had been imagined and put into practice. This was Napoleon's individual art of war, as raiding bakeries and cutting communications were Beaulieu's speciality. Napoleon made the art into a science, and in our own time, with modern conditions of effective, armament and communications, it is more than possible that Moreaus and Jourdans will prove able to practise it with success. But in the old conditions it required a Napoleon. "Strategy," said Moltke, "is a system of expedients." But it was the intense personal force, as well as the genius, of Napoleon that forged these expedients into a _system_.