we have the greater numbers, and the enemy has the greater facility of concentrating forces upon points of collision; that we must fail, unless we can find some way of making our advantage an over-match for his; and that this can only be done by menacing him with superior forces at different points, at the same time; so that we can safely attack, one, or both, if he makes no change; and if he weakens one to strengthen the other, forbear to attack the strengthened one, but seize, and hold the weakened one, gaining so much.
