compelled to make a more or less disastrous retreat, there the chief conditions and principal effects of this mode of defence will be found to have taken place, whatever may be the modifying circumstances otherwise with which it is accompanied. Frederick the Great’s campaign of 1742 in Moravia, of 1744 in Bohemia, the French campaign of 1743 in Austria and Bohemia, the Duke of Brunswick’s campaign of 1792 in France, Massena’s winter campaign of 1810—11 in Portugal, are all cases in which this is exemplified, although in smaller proportions and relations; there are besides innumerable fragmentary operations of this kind, the results of which, although not wholly, are still partly to be ascribed to the principle which we here uphold; these we do not bring forward, because it would necessitate a development of circumstances which would lead us into too wide a field.
In Russia, and in the other cases cited, the crisis or turn of affairs took place without any successful battle, having given the decision at the culminating point; but even when such an effect is not to be expected, it is always a matter of immense importance in this mode of defence to bring about such a relation of forces as makes victory possible, and through that victory, as through a first blow, to cause a movement which usually goes on increasing in its disastrous effects according to the laws applicable to falling bodies.