Whatever method of providing subsistence may be chosen, it is but natural that it should be more easily carried out in rich and well-peopled countries, than in the midst of a poor and scanty population. That the population should be taken into consideration, lies in the double relation which that element bears to the quantity of provisions to be found in a country: first because, where the consumption is large, the provision to meet that consumption is also large; and in the next place, because as a rule a large population produces also largely. From this we must certainly except districts peopled chiefly by manufacturers, particularly when, as is often the case, such districts lie in mountain valleys surrounded by unproductive land; but in the generality of cases it is always very much easier to feed troops in a well populated than in a thinly inhabited country. An army of 100,000 men cannot be supported on four hundred square miles inhabited by 400,000 people, as well as it would be on four hundred square miles with a population of 2,000,000 inhabitants, even supposing the soil equally good in the two cases. Besides, the roads and means of water-carriage are much better in rich countries and afford a greater choice, being more numerous, the means of transport are more abundant, the commercial relations easier and more certain. In a word, there is infinitely less difficulty in supporting an army in Flanders than in Poland. The consequence is, that war with its manifold suckers fixes itself by preference along high roads, near populous towns, in the fertile valleys of large rivers, or along such sea-coasts as are well frequented. This shows clearly how the subsistence of troops may have a general influence upon the direction and form of military undertakings, and upon the choice of a theatre of war and lines of communication. The extent of this influence, what weight shall attach to the facility or difficulty of provisioning the troops, all that in the calculation depends very much on the way in which the war is to be conducted. If it is to be carried on in its real spirit, that is, with the unbridled force which belongs to its element, with a constant pressing forward to, or seeking for the combat and decisive solution, then the sustenance of the troops although an important, is but a subordinate, affair; but if there is to be a state of equilibrium during which the armies move about here and there in the same province for several years, then the subsistence must often become the principal thing, the intendant the commander-in-chief, and the conduct of the war an administration of wagons. There are numberless campaigns of this kind in which nothing took place; the plans miscarried, the forces were used to no purpose, the only excuse being the plea of a want of subsistence; on the other hand Buonaparte used to say “_Qu’on ne me parle pas des vivres!_”