The requirement that each separate tactical unit should he made equal or superior in artillery to the corresponding hostile unit is thoroughly mechanical, as if in war division always fought against division and corps against corps! Superiority at the decisive point is the crucial test. This superiority is attained by means of an unexpected concentration of forces for attack, and there is no reason why the superiority in artillery should not also be brought about in this way. If by superior tactical skill two army corps, each with 96 guns, combine against a hostile army which brings 144 guns into action, that signifies a superiority of 48 guns and a double superiority in infantry. If it is assumed that on both sides the army corps is armed with 144 guns, and that in consequence of this the tactical superiority has become so slight that neither side can claim a superiority in one direction, then equal forces meet, and chance decides the day. Since the Japanese were tactically more efficient than their enemy and took the offensive, they were enabled to unite the superior forces in the most decisive directions, and this advantage proved far greater than the numerical superiority of the Russian army as a whole. If we look at the whole matter we shall come to the conclusion that the artillery, if it is not a question of pure defence, need never occupy within a line of battle so much ground that the concentration of a considerably superior force of infantry for attack is rendered doubtful. In this respect we have, in our present organization already exceeded the expedient proportion between the two arms in favour of the artillery. The conclusion is that this latter arm never need, within the separate divisions, be made so strong that the attacking capacities of the army are thereby prejudiced. This is the decisive point. Any excess in artillery can be kept on the battlefield in reserve when space is restricted; if the attacking efficiency of the troops is reduced, then artillery becomes a dead weight on the army instead of an aid to victory. It is far more important to be able to unite superior forces for a decisive attack than to meet the enemy with equally matched forces along the whole front. If we observe this principle, we shall often be weaker than the enemy on the less important fronts; this disadvantage may be partly counterbalanced by remaining on the defensive in such a position. It becomes a positive advantage, if, owing to an overpowering concentration of forces, victory is won at the decisive point. This victory cancels all the failures which may have been recorded elsewhere.