To obtain this fire superiority certain things are necessary. We must have proper fire distribution. To explain this let us assume that a hostile line is 200 yards long, that our force is the stronger. We concentrate our fire on the right half of the hostile line, leaving the other half untouched. The effectiveness of the fire of half of this line remains at 280, the other half falls to 2, average 141; our advance is impossible. We now cover the entire target and its fire effectiveness falls to 7; our advance is possible. [Sidenote: Fire distribution] Fire superiority is possible, then, only if we have fire distribution. It is not sufficient to fire a certain number of shots at part of the line, the whole hostile line must be subjected to a nerve racking fire to reduce the effectiveness of its fire. Another thing to be considered is that the enemy will conceal himself as much as possible. On a large part of the hostile line no one will be seen; men will be hidden by tufts of grass, bushes, etc. But while this cover conceals the enemy from our view, he sees our location and his fire is not interrupted. There is a strong tendency to shoot only at the men that can be seen. This must be overcome; much of our firing must be aimed at a locality, although unseen the enemy is nevertheless there and his fire effectiveness must be kept down. Our fire must be distributed to cover every part of the hostile line whether the enemy is seen or not. [Sidenote: Fire control] To secure this fire distribution we must be able to direct the fire of our men, to place it where wanted. But direction necessarily implies control; you can not direct what you cannot control. Thus a fire control system which will work on the battlefield is a primary requisite to success. [Sidenote: Fire discipline] Another term used is fire discipline. The word fire adds nothing to its meaning; but discipline is vital to success. No matter what your system of control, if the men do not respond with prompt obedience it is worthless. Disciplined men can be counted on to do what is wanted if they know how, others cannot. There is no fire discipline distinct from other military discipline. To sum up: fire superiority is necessary to success, to attain fire superiority we must properly distribute our fire, to do this we must be able to control and hence direct it, and this can only be done if our men are disciplined. An attack with raw troops is possible only against still poorer ones. [Sidenote: Method of fire control]