Ardant du Picq, haunted by the need of a doctrine which would correct existing evils and disorders, was continually returning to the fountain-head. Anxious to instruct promising officers, to temper them by irrefutable lessons, to mature them more rapidly, to inspire them with his zeal for historical incidents, he resolved to carry on and add to his personal studies while aiding them. Daring to take a courageous offensive against the general inertia of the period, he translated the problem of his whole life into a series of basic questions. He presented in their most diverse aspects, the basic questions which perplex all military men, those of which knowledge in a varying degree of perfection distinguish and classify military men. The nervous grasp of an incomparable style models each of them, carves them with a certain harshness, communicates to them a fascinating yet unknown authority which crystallizes them in the mind, at the same time giving to them a positive form that remains true for all armies, for all past, present and future centuries. Herewith is the text of the concise and pressing questions which have not ceased to be as important to-day (1902) as they were in 1870: "_General_, "In the last century, after the improvements of the rifle and field artillery by Frederick, and the Prussian successes in war--to-day, after the improvement of the new rifle and cannon to which in part the recent victories are due--we find all thinking men in the army asking themselves the question: 'How shall we fight to-morrow?' We have no creed on the subject of combat. And the most opposing methods confuse the intelligence of military men. "Why? A common error at the starting point. One might say that no one is willing to acknowledge that it is necessary to understand yesterday in order to know to-morrow, for the things of yesterday are nowhere plainly written. The lessons of yesterday exist solely in the memory of those who know how to remember because they have known how to see, and those individuals have never spoken. I make an appeal to one of those. "The smallest detail, taken from an actual incident in war, is more instructive for me, a soldier, than all the Thiers and Jominis in the world. They speak, no doubt, for the heads of states and armies but they never show me what I wish to know--a battalion, a company, a squad, in action. "Concerning a regiment, a battalion, a company, a squad, it is interesting to know: The disposition taken to meet the enemy or the order for the march toward them. What becomes of this disposition or this march order under the isolated or combined influences of accidents of the terrain and the approach of danger? "Is this order changed or is it continued in force when approaching the enemy? "What becomes of it upon arriving within the range of the guns, within the range of bullets?