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On War

Carl von Clausewitz · c. 1816–1830 (work compiled/rewritten across these years) primary

passage 247 of 539 · BOOK I. ON THE NATURE OF WAR > CHAPTER XIV. Subsistence (3/12)

in brief
Clausewitz contrasts subsistence extremes—Federick’s more controlled provisioning versus revolutionary armies living by exaction and plunder—and lays out a fourfold model: living off inhabitants, troop-enforced exactions, regular requisitions, and magazines.

less frequent, they were found to occasion a much greater drain upon the country, and much greater waste than if the requirements were satisfied by means of requisitions and imposts.

When the French Revolution suddenly brought again upon the war stage a national army, the means which governments could command were found insufficient, and the whole system of war, which had its origin in the limited extent of these means, and found again its security in this limitation, fell to pieces, and of course in the downfall of the whole was included that of the branch of which we are now speaking, the system of subsistence. Without troubling themselves about magazines, and still less about such an organisation as the artificial clockwork of which we have spoken, by which the different divisions of the transport service went round like a wheel, the leading spirits of the revolution sent their soldiers into the field, forced their generals to fight, subsisted, reinforced their armies, and kept alive the war by a system of exaction, and of helping themselves to all they required by robbery and plunder.

Between these two extremes the war under Buonaparte, and against him, preserved a sort of medium, that is to say, it just made use of such means as suited it best amongst all that were available; and so it will be also in future.

The modern method of subsisting troops, that is, seizing every thing which is to be found in the country without regard to meum et tuum may be carried out in four different ways: that is, subsisting on the inhabitant, contributions which the troops themselves look after, general contributions and magazines. All four are generally applied together, one generally prevailing more than the others: still it sometimes happens that only one is applied entirely by itself.

1.—Living on the inhabitants, or on the community, which is the same thing.

If we bear in mind that in a community consisting even as it does in great towns, of consumers only, there must always be provisions enough to last for several days, we may easily see that the most densely populated place can furnish food and quarters for a day for about as many troops as there are inhabitants, and for a less number of troops for several days without the necessity of any particular previous preparation. In towns of considerable size this gives a very satisfactory result, because it enables us to subsist a large force at one point. But in smaller towns, or even in villages, the supply would be far from sufficient; for a population of 3,000 or 4,000 in a square mile which would be large in such a space, would only suffice to feed 3,000 or 4,000 soldiers, and if the whole mass of troops is great they would have to be spread over such an extent of country at this rate as would hardly be consistent with other essential points. But in level countries, and even in small towns, the quantity of those kinds of provisions which are essential in war is generally much greater; the supply of bread which a peasant has is generally adequate to the consumption of his family for several, perhaps from eight to fourteen days; meat can be obtained daily, vegetable productions are generally forthcoming in sufficient quantity to last till the following crop. Therefore in quarters which have never been occupied there is no difficulty in subsisting troops three or four times the number of the inhabitants for several days, which again is a very satisfactory result. According to this, where the population is about 2,000 or 3,000 per square mile, and if no large town is included, a column of 30,000 would require about four square miles, which would be a length of side of two miles. Therefore for an army of 90,000, which we may reckon at about 75,000 combatants, if marching in three columns contiguous to each other, we should require to take up a front six miles in breadth in case three roads could be found within that breadth.

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topics: conquest, plunder, and captives · strategy and the aims of war · supply, logistics, and encampment

On War · Carl von Clausewitz · 1816–1830