Military science even in France, where it has now reached the greatest perfection, has had to struggle with selfishness and the occasional and almost insuperable difficulties, which the appointment of ministers incompetent and inexperienced in military affairs, threw in their way. Folard is reputed to have died broken-hearted, by the persecution which he experienced from stupid generals and ministers who looked to nothing but official patronage. Levrilliere, whose admirable improvements in the various departments of artillery, to whom is owing the reduction of the length and the weight of metal of guns of the same calibre, was persecuted out of France, and obliged to take refuge in the army of Austria, where his services proved so formidable as to induce his recall, and the final adoption of his vast improvements; those improvements which, by lessening the weight of artillery, have led to the powerful institution of horse artillery. Wise nations are never disposed to reject the useful because it is not of their own invention. The Austrians after the battle of Austerlitz immediately abolished their old discipline, and the archduke Charles instituted a better system upon the principles of the modern French. Even the French themselves, surrounded by triumphs, have not yet deemed the science of war perfect. New dispositions of the column were adopted in Egypt; it was only in 1808 that the _regulations_ for the exercise and manœuvres of _Cavalry_ were completed; and even since the campaign which closed with the battle of Wagram, they have made some important alterations in the arms of their cavalry, founded either on the experience of inconvenience in their own, or of some superior advantages in those of their enemy. The conclusions which we draw from these facts are, that the prevalence of erroneous opinions on the military institutions is a subject of very serious concern; because it is evident, that so long as a nation or a government, which has the care of the national concerns, and a great influence over its opinions, suffers ignorance and prejudice to occupy the place of intelligence, a similar fate may be considered as the consequence, whenever the nation shall be attacked, as other negligent or ignorant nations have been, by a power of superior knowlege and capacity in the art of war.