From his years of exile he had learned the lesson of dealing as lightly as possible with the people of his own country, and henceforth he associated himself with the development of systems of espionage in other countries, notably in France, where he made all preparations for the war of 1870, and made them so thoroughly that it is common knowledge now how the German invaders knew the country in which they were fighting better than did Napoleon's own troops. He worked quite independently of the diplomatic corps, established his own agencies in France, and set up his "fixed posts," in a manner which has survived to some extent up to the present day both as regards France and other countries. At this time the work which he was in process of organising was a thing so new that it received little attention from the French authorities of that day, and the system may be said to have reached its zenith of perfection with the war of 1870, when in every French town and village of the north-east was a "fixed post," or, in plain English, a spy in the pay of the German secret service. So complete was the information furnished that the personal histories of individuals, their failings and eccentricities, were catalogued, and scandal was tabulated in the archives of Berlin for use in case it should be required, while fortifications and districts were mapped out with a thoroughness such as the military surveyors of France could not excel. When the war came the Prussian troops marched through the country and knew its resources and difficulties even better than the inhabitants themselves. How this was accomplished will be shown later in detail. Meanwhile Stieber, as privy councillor and confidant of Bismarck, gradually overcame the antipathy of the military caste--an antipathy which his useful work in Bohemia had gone far to allay. According to the account given in his own Memoirs, he discovered that an attempt was to be made on the life of the Czar Alexander when the latter attended a grand review in company with Napoleon at Longchamps. It was Bismarck who conceived the idea of not only letting the attempt take place, but of frustrating it and having the would-be assassin arrested, since, as Bismarck planned, French justice would not impose the capital sentence for the merely attempted crime. The result justified the forecast, for the assassin was not executed--and Alexander remembered, when 1870 came, that France had let off lightly (from a Russian point of view) the man who would have murdered him. In consequence, Prussia had nothing to fear and Napoleon had nothing to hope from Russia when the war began. Stieber could have stopped the attempt at assassination, had he chosen; but, by allowing things to fall in the fashion that they did, Bismarck made certain that there would be no Franco-Russian alliance. It was characteristic of Prussian diplomacy and Prussian methods, and it was a trick after Stieber's own heart, as his Memoirs show.