The great change introduced into the art of war by the invention of fire-arms, has enhanced still further both the expense of exercising and disciplining any particular number of soldiers in time of peace, and that of employing them in time of war. Both their arms and their ammunition are become more expensive. A musket is a more expensive machine than a javelin or a bow and arrows; a cannon or a mortar, than a balista or a catapulta. The powder which is spent in a modern review is lost irrecoverably, and occasions a very considerable expense. The javelins and arrows which were thrown or shot in an ancient one, could easily be picked up again, and were, besides, of very little value. The cannon and the mortar are not only much dearer, but much heavier machines than the balista or catapulta; and require a greater expense, not only to prepare them for the field, but to carry them to it. As the superiority of the modern artillery, too, over that of the ancients, is very great; it has become much more difficult, and consequently much more expensive, to fortify a town, so as to resist, even for a few weeks, the attack of that superior artillery. In modern times, many different causes contribute to render the defence of the society more expensive. The unavoidable effects of the natural progress of improvement have, in this respect, been a good deal enhanced by a great revolution in the art of war, to which a mere accident, the invention of gunpowder, seems to have given occasion.
In modern war, the great expense of firearms gives an evident advantage to the nation which can best afford that expense; and, consequently, to an opulent and civilized, over a poor and barbarous nation. In ancient times, the opulent and civilized found it difficult to defend themselves against the poor and barbarous nations. In modern times, the poor and barbarous find it difficult to defend themselves against the opulent and civilized. The invention of fire-arms, an invention which at first sight appears to be so pernicious, is certainly favourable, both to the permanency and to the extension of civilization.