The question now arises whether our present formation of six regiments to a Division is really equal to all demands which may be made upon it; whether, in fact, in view of the strategical requirements it may be called on to fulfil, and the degree of resistance to their execution it is likely to encounter, six regiments will prove numerically equal to their task.
Considered in relation to the enormous Armies of the present day, and the still greater possibilities a general call to arms of a whole nation may involve, six regiments represent a very small actual factor of strength. If they should have to take the field for an independent mission, it would not even be possible to keep them all together. The protection of the flanks, and of the necessary baggage and supply trains, the far-reaching reconnaissances, and the need for extended requisitions, all unite to compel the creation of detachments, which in the aggregate must make considerable inroads on the total strength. Then there is the inevitable tale of losses on the march, the necessity for subdivision of one's forces for the passage or the turning of defiles; in fact, the demands are so many that the true fighting body of the Division—i.e., the squadrons available for the ultimate decisive shock—is represented by a very small fraction of its original forces. If a complete Division can place only 3,600 sabres in the field, or, dismounted, from 1,680 to 3,000 rifles, according to the number of horse-holders required—figures which even without the above-mentioned detachments are quite inconsiderable in relation to what even an inconsiderable Infantry opponent can bring into action—what prospect of success is there for the weakened Independent Division in the execution of quite minor operations, when even in 1870-1871, not once, but frequently, the main body of our Cavalry Divisions shrank often to six or seven weak squadrons.
It is chiefly the consequences of our, on the whole, satisfactory experiences in the above Campaign which have led us to accept the existing Division of six regiments as a satisfactory solution of this problem of strength; but we forget that in those days we had no Cavalry opponent to encounter, and that our sphere of action, owing to the want on our side of an adequate equipment of firearms, was small indeed in comparison with what we must expect in the future. We are encouraged in our illusion by the fact that in our Peace manœuvres the strength of the opposing forces is generally nearly equal, and also because the actual demands War will make upon the Arm are still in these exercises very imperfectly realized, and from the nature of the case cannot receive full recognition. Further, there is the fact that our possible opponents have adopted the same organization, and last, but not least, there remains the view that every tactical unit of the Cavalry must not only be capable of being strategically employed as a whole, but must also be in point of size within the control of its Leader as a tactical unit.
Our unfortunate experiences with larger formations in 1866 are often cited in favour of our present system, the point being ignored that it was not the size of these bodies, but the faulty methods in which they were employed, both strategically and tactically, that led to our disappointment.
I think, therefore, that unprejudiced consideration must come to the conclusion that our Divisions as they now exist are too weak for the many and most decisive operations they will be called on to undertake. The absolute necessity to secure the victory over the enemy's Cavalry at the decisive point under all circumstances, and at the same time to retain a sufficient force in hand to reap all the consequences of that victory, will, I am convinced, lead to a materially greater concentration of power in the single unit.
If from this point of view the permanent constitution of Cavalry Divisions cannot be upheld, it follows that even less is to be said for the formation of still stronger units in Peace-time, for this measure would entail in even greater degree the very same strategical and tactical limitations we have noted in the case of the Divisions, and still further cramp the necessary adaptability of the organization to meet the conditions of our Peace-time training. At the same time, it is clear that it is of the utmost importance that the formation of these stronger formations, Corps, or Divisions of greater numerical strength, the necessity for which can be recognised in advance, should be arranged for in the mobilization plans, and not built up afterwards by the mere combination of existing Divisions.
For such bodies cannot be improvised altogether. In order to develop their full efficiency they require a carefully selected and ample staff of men who can be trusted to pull well together, and who have at their disposal all the auxiliary services necessary for greater independent operations. For these both trains and columns are needed, which must be larger than those of two or even three single Divisions; for, on the one hand, the greater size of the Corps entails closer concentration of its units, thus making heavier demands on the provision columns; and, on the other, the Corps must be capable of carrying out longer and more obstinate engagements than a single Division.
It is, therefore, most essential that the several Staffs required for the Corps to be created in War-time should be thoroughly trained so as to insure their working together, and the trains and columns necessary to complete these units should be held ready for them in time of Peace.[17]
To hand over the functions of Corps Commander to the senior of the two or three Divisional Commanders would hardly be an adequate means of securing satisfactory results even for a single day of battle; still less could it suffice in the case of an independent strategic operation. On the other hand, it is not at all essential that the Corps thus formed at the outset of operations should be retained intact throughout their whole period. One can make detachments from them, or reinforce them according to circumstances, and thus attain that very flexibility of organization which I have endeavoured to prove to be an absolutely indispensable factor to meet the conditions of our times.
It appears to me also that the same advantage which it is hoped to realize by the creation of permanent Divisions can be reached by other roads, and with still better results.