The attack is therefore an immense, unlimited, simultaneous assault on all points of the front of attack, furiously pushed straight to the front until all the enemy’s defenses are broken through. _The characteristic of this attack is that it is not progressive but is an assault of a single rush; it must be accomplished in one day as otherwise the enemy reforms, and the defense, with terrible engines of sudden destruction, will later recover its supremacy over the attack, which cannot quickly enough regain the mastery of this consuming fire._ The whole series of frightful defenses cannot be nibbled at successively; they must be swallowed whole at one stroke with one decision. Therefore, the fight is an unlimited assault. In order to attempt the assault, what is necessary? Assaulting troops—and all troops are far from being assaulting troops. An overwhelming superiority of fire all the time and not only at the moment of assault. The possibility of rushing forth from a line of shelter a short distance from the enemy, a condition equally to be sought for in any other phase of the combat. In order that the assault may be unlimited, the sacrifice being resolved upon, it must be pushed through to a finish and the enemy drowned under successive waves, _calculating, however, that infantry units disappear in the furnace of fire like handfuls of straw_. Is it possible to pierce the enemy’s lines? I firmly believe so since the 9th of May[2]. But before that, this hypothesis seemed to me a mad temerity. I had taken part in the Battle of Nancy and in the Battle of Ypres where it appears that the Germans, after a terrifying deluge of heavy projectiles during interminable days, tried to break through us, which I certainly did not think possible, seeing the paltry and easily shattered efforts of their infantry. In considering the forces put into action which did not succeed in making us yield a foot, I believed in the inviolability of the lines of defense. On the 9th of May, by a single dash, our first wave submerged in one hour all the enemy’s first-line defenses to a depth of several kilometres. The assault is extremely murderous; it is an implacable struggle in which one or the other must fall and in which the engines of combat not destroyed beforehand often make terrible havoc in the ranks of unprotected assaulting troops. He who risks his life and does not wish to die but to succeed, becomes at times ingenious. That is why I, who was part of the human canister for more than nine months, have set about to consider the means of saving the inestimable existence of so many humble comrades, or at least to figure out how the sacrifice of their lives may result in victory. II. PREPARATION OF THE ATTACK. FORMS OF THE GERMAN DEFENSIVE ORGANIZATIONS. The German defensive organizations, as well as I have been able to establish, appear to be in general as follows:[3]