The importance which attaches to the first tactical decisions, the fact that their success is mainly determined by the uninterrupted execution of the railway deployment, the safe arrival of the troops and war material in the appointed zones of concentration, the consideration that the continuance of the operation after the first battle--retreat or pursuit--is mainly conditioned by the uninterrupted action of the rearward communications, make it indubitable that it is of the utmost importance to disturb the corresponding operations of the enemy, and thus place one's own Army from the very beginning in a position of material and strategic advantage. Since the Cavalry is not only able to cover great distances with overwhelming rapidity, but also, owing to its special character as a standing branch of the Army, is always ready to march and operate, whilst the other portions of the Army are still occupied with their mobilization, the opinion has been freely expressed that it would be advantageous to utilize this period required for the mobilization and railway transport of the other Arms for Cavalry raids, either into the zone of concentration, or against the communications of the enemy. Russia has for this very purpose concentrated upon the German and Austrian frontiers enormous Cavalry forces, supported by light infantry. France also keeps a numerous Cavalry practically on a war footing on the frontiers of Lorraine. On the outbreak of War these masses are ready at the shortest notice to ride over our frontiers, to break up our railways, to seize our horses and depots, to destroy our magazines, and to carry terror and consternation into our zone of assembly. It cannot be denied that in such manner by no means inconsiderable damage could be caused, and hence one must earnestly consider, first, what chances of success such enterprises offer, and next, whether the relative magnitude of the probable results are proportionate to the probable losses they must necessarily entail.