CHARLES [KARL LUDWIG] (1771-1847), archduke of Aus tria and duke of Teschen, third son of the emperor Leopold II., was born at Florence (his father being then grand-duke of Tus cany) on Sept. 5, 1771. His youth was spent in Tuscany, at Vi enna and in the Austrian Netherlands, where he began his career of military service in the war of the French Revolution. He com manded a brigade at Jemappes, and in the campaign of 1793 dis tinguished himself at the action of Aldenhoven and the battle of Neerwinden. In this year he became Statthalter in Belgium and received the army rank of lieutenant field marshal, which promo tion was soon followed by that to Feldzeugmeister (master of ordnance). In the remainder of the war in the Low Countries he held high commands, and he was present at Fleurus. In 1795 he served on the Rhine, and in the following year was entrusted with the chief control of all the Austrian forces on that river. His conduct of the operations against Jourdan and Moreau in 1796 marked him out at once as one of the greatest generals in Europe. At first falling back carefully and avoiding a decision, he finally marched away, leaving a mere screen in front of Moreau; falling upon Jourdan he beat him in the battles of Amberg and Wiirzburg, and drove him over the Rhine with great loss. He then turned upon Moreau's army, which he defeated and forced out of Germany. For this campaign, one of the most brilliant in modern history, see FRENCH REVOLUTIONARY WARS. In I 797 he was sent to arrest the victorious march of Gen. Bonaparte in Italy, and he conducted the retreat of the over-matched Austrians with the highest skill. In the campaign of 1799 he was once more op posed to Jourdan, whom he defeated in the battles .of Osterach and Stokach, following up his success by invading Switzerland and defeating Massena in the (first) battle of Zurich, after which he re-entered Germany and drove the French once more over the Rhine. Ill-health, however, forced him to retire to Bohemia, whence he was soon recalled to undertake the task of checking Moreau's advance on Vienna. The result of the battle of Hohen linden had, however, foredoomed the attempt, and the archduke had to make the armistice of Steyer. His popularity was now such that the diet of Ratisbon, which met in 18o2, resolved to erect a statue in his honour and to give him the title of saviour of his country; but Charles refused both distinctions.
In the short and disastrous war of 18o5 the archduke Charles commanded what was intended to be the main army, in Italy, but events made Germany the decisive theatre of operations, and the defeats sustained on the Danube neutralized the success obtained by the archduke over Massena in the desperately fought battle of Caldiero. With the conclusion of peace began his active work of army reorganization, which was first tested on the field in 1809. As generalissimo of the army he had been made field marshal some years before. As president of the Council of War, and supported by the prestige of being the only general who had proved capable of defeating the French, he promptly initiated a far-reaching scheme of reform, which replaced the obsolete methods of the 18th century, the chief characteristics of the new order being the adoption of the "nation in arms" principle and of the French war organization and tactics. The new army was surprised in the process of transition by the war of 1809, of which Charles was commander in chief ; yet even so it proved a far more formidable opponent than the old, and, against the now heterogeneous army which Napoleon controlled (see NAPOLE ONIC CAMPAIGNS) it succumbed only after a desperate struggle. Its initial successes were neutralized by the reverses of Abens berg, Landshut and Eckmuhl; but, after the evacuation of Vienna, the archduke won the great battle of Aspern-Essling (q.v.) and soon afterwards fought the still more desperate battle of Wagram (q.v.), at the close of which the Austrians were de feated but not routed ; they had inflicted upon Napoleon a loss of over 5o,000 men in the two battles. At the end of the cam paign the archduke gave up all his military offices, and spent the rest of his life in retirement, except a short time in 1815, when he was governor of Mainz. In 1822 he succeeded to the duchy of Saxe-Teschen. The archduke Charles married, in 1815, Princess Henrietta of Nassau-Weilburg (d. 1829). He had four sons, the eldest of whom, the archduke Albert (q.v.) became one of the most celebrated generals in Europe, and two daughters, the elder of whom became queen of Naples. He died at Vienna on April 3o, The caution which the archduke preached so earnestly in his strategical works, he displayed in practice only when the situation seemed to demand it, though his education certainly prejudiced him in favour of the defensive at all costs. He was at the same time capable of forming and executing the most daring offensive strategy, and his tactical skill in the handling of troops, whether in wide turning movements, as at Wiirzburg and Zurich, or in masses, as at Aspern and Wagram, was certainly equal to that of any leader of his time, Napoleon only excepted. The campaign of 1796 is considered almost faultless. That he sustained defeat in 1809 was due in part to the great numerical superiority of the French and their allies, and in part to the condition of his newly reorganized troops. His six weeks' inaction after the victory of Aspern is, however, open to unfavourable criticism. As a military writer, his position in the evolution of the art of war is very im portant, and his doctrines had naturally the greatest weight. Nevertheless they cannot but be considered as antiquated even in 18o6. Caution and the importance of "strategic points" are the chief features of his system. The rigidity of his geographical strat egy may be gathered from the direction that "this principle is never to be departed from." Again and again he repeats the advice that nothing should be hazarded unless one's army is completely secure, a rule which he himself neglected with such brilliant results in 1796. In his tactical writings the same spirit is conspicuous. His reserve in battle is designed to "cover a retreat." The baneful in fluence of these principles was shown in the maintenance of Koniggratz-Josef stadt in 1866 as a "strategic point," which was preferred to the defeat of the separated Prussian armies; in the strange plans produced in Vienna for the campaign of 1859, and in the "almost unintelligible" battle of Montebello in the same year. The theory and the practice of the archduke Charles form one of the most curious contrasts in military history. In the one he is often unreal, in the other he displayed, besides great skill, a vivid activity which made him for long the most formidable opponent of Napoleon.
His writings were edited by the archduke Albert and his brother the archduke William in the Ausgewahlte Schriften seiner Kgl. Hoheit Erzh. Karl v. Osterreich (1862; reprinted 1893, Vienna and Leipzig) , which includes the Grundsdtze der Kriegskunst fur die Gen erale (18o6), Grundsatze der Strategie erldutert durch die Darstellung des Feldzugs 5796 (1814), Gesch. des Feldzugs von 1799 (1819)—the two latter invaluable contributions to the history of the war, and papers "on the higher art of war," etc. See, besides the histories of the period, F. J. A. Schneidawind, Karl, Erzherzog v. Osterr. and die &sterr. Armee (Vienna, 1840) and Das Buch vom Erzh. Karl (1848) ; Ed. Duller, Erzh. Karl von Osterr. ; H. von Zeissberg, Erzh. Karl von Osterr. (Vienna, 1893) ; C. von Binder-Krieglstein, Geist and Stofi im Kriege (Vienna, 1893) ; M. E. von Angeli, Erzherzog Karl als Feldherr and Heere-organisator (5 vols., Vienna and Leipzig, 1896-97) ; R. V. Caemmerer, Development of Strategical Science, Eng. trans. by Karl von Donat. ch. iv. (19o5).