On the establishment of the Consulate, Soult, whose politics rested solely on personal ambition and not on principle, at once divined the aims of Bonaparte. Thanks to Masséna's warm introduction and his own reputation, he found himself cordially received by the First Consul. Honours were showered upon him. He was one of the four trusted commandants of the Consular Guard, and when Napoleon began to organise his forces for the struggle with England, he entrusted Soult with the command of the important army corps at Boulogne. The First Consul could have made no better selection. Under his rough exterior Soult hid great powers of business, a keen perspicacity, and much tact. Quick-witted, with a subtle, restless spirit, he had great strength of character, and his ambition spurred him on to a diligence which knew neither mental nor physical fatigue. But in spite of his cold air and self-restraint, he loved the pleasures of the table, and was passionately fond of women, while his wife exercised a complete domination over him, and before her he quailed like a child. In war he had the keen imagination and quick penetration of a great strategist. His special forte was the planning of vigorous enterprises. But he preferred to direct rather than to lead. Though his courage was undoubted, as he grew older he was chary of risking his person, and had not the dashing qualities of Lannes and Ney. As an administrator he was the equal of Davout. Once entrusted with the command of the army corps at Boulogne, the young general of thirty-five laid aside all thoughts of personal pleasure and ease and set himself to manufacture a fighting machine which should be the most perfect of its time. Never was such attention shown to details of administration and instruction, and the discipline of the corps at Boulogne was the severest that French troops had ever undergone. As might be expected, there were many grumbles, and soon rumours and complaints reached the First Consul, who himself remonstrated with his lieutenant, telling him that the troops would sink under such treatment; but he was greeted with the reply, "Such as cannot withstand the fatigue which I myself undergo will remain at the depôts: but those who do stand it will be fit to undertake the conquest of the world." Soult was right in his estimate, for in spite of the demands he made on their endurance, he had won their love and admiration; the weak and the grumblers fell out, and when war was declared his corps marched to the front, a body of picked men with absolute confidence in their leader. In spite of the fact that he had never held an independent command, there was no surprise when he was included among the number of the Marshals, for his brilliant record, his selection as commandant of the Guard, his success at Boulogne, and the favour which the First Consul had long shown to him, had marked him out as one of the coming men. The campaign of 1805 bore witness to the justness of the Emperor's choice. It has often been said, and indeed Wellington himself lent credit to the dictum, that Soult was primarily a strategist and no tactician, but at Austerlitz he showed that calm capacity to read the signs of the conflict, and that knowledge of when and where to strike, which had first brought him to the front in the days of Fleurus. Entrusted with the command of the centre, in spite of the entreaties of his subordinates and even the commands of the Emperor, he refused to open his attack until he saw that the Russian left was hopelessly compromised. Thanks to his clearness of foresight, when once he launched his attack he not only put the issue out of doubt, but completely overwhelmed the Russians. Their left was surrounded and annihilated while the centre and right were driven from the field in complete rout. At the moment when the Marshal was directing the movement which wrested from the enemy the key of the position, Napoleon and his staff arrived on the scene. The Marshal explained his manœuvre and asked the Emperor for orders. "Carry on, carry on, my dear Marshal," said the Emperor; "you know quite as well as I do how to finish the affair." Then, stretching out his arms to embrace him, he cried out, "My dear Marshal, you are the finest tactician in Europe." After the treaty of Pressburg Soult's corps remained as part of the army of occupation in the valley of the Danube, and in 1806 formed one of the corps of the Grand Army during the Prussian War. At Jena he had the satisfaction of playing an important part in the battle, for when Ney's rash advance had compromised the situation, it was he who checked the victorious rush of the enemy. But later the Marshal had bitter cause to repent these triumphs won over his rival. Already the enemy of Berthier, and consequently often misrepresented to the Emperor, Soult now incurred the bitter hatred of Ney; and what the enmity of Berthier and Ney meant he found to his cost during the Peninsular War. Immediately after Jena the Marshal was detached in pursuit of the Prussians, and on the day following defeated Marshal Kalkreuth at Greussen and proceeded to blockade Magdeburg. From Magdeburg he hurried off to join in the pursuit of Blücher, and aided by Bernadotte he cornered the crafty old Prussian at Lübeck. But brilliant as his performance was, he did not gain the credit he deserved, for on the day of the action Murat arrived and took over the command, arrogating to himself all the honours of the surrender. The Marshal was justly indignant, but, bitterly as he resented the injustice, he was too politic to storm at the Emperor like Marshal Lannes. In the terrible campaign in Poland the Marshal added to his laurels. At Eylau, when Augereau had been routed, Davout checked, and Ney and Bernadotte not yet arrived on the field, it was he who warned the Emperor against showing any signs of retreat. "Beware of doing so, Sire," he exclaimed; "let us remain the last on the field and we shall have the honour of the day: from what I have seen I expect the enemy will retreat in the night." The advice was sound, and the Marshal, during the night following the battle, had the pleasure of being the first to perceive that the enemy was retreating, and it was his aide-de-camp who carried the news to headquarters. Well it was for the Emperor that he accepted Soult's advice, for the terrible carnage in the snow had taken the heart out of the troops, and a retreat would have soon degenerated into a rout. So shaken was the French morale, that when, on the next day, the Emperor rode down the lines, instead of being greeted with cries of "Long live the Emperor," he was received with murmurs of "Peace and France," and even "Peace and Bread." During the final advance Soult had his share of the hard fighting at Heilsberg, but he escaped from the horrors of Friedland, as he had been detached to occupy Königsberg. After the peace of Tilsit, the Marshal's corps was cantonned round Stettin, and it was there that in 1808 he received the title of Duke of Dalmatia. The selection of this name caused the Duke much annoyance, for instead of receiving a title which should recall one of his great exploits, as had Ney, Davout, Lannes, Kellermann, and Masséna, his designation was chosen from a country with which he had not the smallest connection, and thus he found himself on a par with Bessières, Maret and Caulaincourt. What he hankered after was the title of Duke of Austerlitz, but the Emperor refused to share the glories of that day. In spite of the huge dotation he received, the Marshal added this supposed slight to the many grudges he bore his master.

From Stettin the Duke of Dalmatia was summoned in September, 1808, to attend the Conference at Erfurt, and from there he was hurriedly despatched to Spain. The Emperor was much displeased with many of his corps commanders, and so on the arrival of the Duke he ordered him to take over from Marshal Bessières the command of the second corps. Soult was delighted at the prospect of service. Full of zeal, he set out for his new command, and pushing on in spite of all obstacles, he arrived at his headquarters alone on a jaded post-horse twenty-four hours before his aides-de-camp. A few days later he dashed to pieces the semblance of a Spanish army at Gamoral and occupied Burgos, where he was unable to prevent his new command from sacking the town and inflicting every possible horror on the inhabitants. From Burgos the Emperor despatched him to the north-west, and thus it was that the cavalry of Sir John Moore's army surprised Soult's outpost at Sahagun. The Emperor could scarcely believe that an English army had actually dared to advance against his troops, but he at once ordered Soult to co-operate with the divisions he led in person from Madrid, and when he found that the English were bound to escape, he handed over the command to the Marshal. The French suffered almost as much as the English in the terrible pursuit, and it was the tried soldiers of both armies who at last met face to face at Corunna. After the battle Soult wrote to the Emperor that without fresh reinforcements he could effect nothing against the English, but when later he found that the enemy had evacuated Corunna, he claimed that he had won a victory. With a generosity that must be placed to his credit, he took great care of the grave of his adversary, Sir John Moore, and erected a monument with the inscription, "Hic cecidit Johannes Moore dux exercitus Britannici in pugna Januarii xvi. 1809, contra Gallos a duce Dalmatiæ ductos."

Before leaving for France the Emperor had drawn up a cut and dried plan for the systematic conquest of the whole Peninsula. The pivot of the whole scheme rested on the supposed ability of Soult to overrun Portugal and drive the British out of Lisbon by February 16, 1809. Unfortunately, Napoleon left one factor out of his calculations, and that the most important, namely, the feelings of the Spanish and Portuguese populations. The Duke of Dalmatia very soon perceived the Emperor's mistake, but, anxious not to be accused of shirking his task and of allowing himself to be stopped by what were termed bands of ill-armed peasants, he started on his expedition to conquer the kingdom of Portugal with but three thousand rounds for his guns and five hundred thousand cartridges for his infantry, carried on the backs of mules, for owing to the state of the roads in the north-west corner of the Peninsula wheel traffic was impossible. In spite of the difficulties of transport and the murmurs of many of his officers, the indefatigable Marshal hurled all obstacles aside and with sixteen thousand troops forced his way into Oporto on March 29th, six weeks behind his scheduled time. But there he had to call a halt, for he had not the men nor the material for a further advance on Lisbon. The situation was by no means reassuring. To reach Oporto he had been obliged to cut himself adrift from his base, and he had no tidings of what was happening in the rest of the Peninsula. During April he set himself to conciliate the people of Portugal and at the same time to try and get into touch with the other French corps in Spain. The Marshal's attempt at conciliation was on the whole successful, but his kindness resulted in an unsuspected turn in the situation. A movement was started among a certain section of the Portuguese nobility and officials to offer the crown of Portugal to the Marshal. The Duke of Dalmatia, greedy and ambitious but ever cautious, was of opinion that though the Emperor might disapprove of the idea, he would accept a fait accompli. Accordingly he secretly sanctioned the movement, and allowed placards to appear in Oporto stating that "the Prince Regent, by his departure to Brazil, had formally resigned the crown, and that the only salvation of Portugal would be that the Duke of Dalmatia, the most distinguished of the pupils of the great Napoleon, should ascend the vacant throne." Further, he actually, on April 19th, ordered his chief of the staff to send a circular to commanding officers inviting their co-operation in his seizure of the crown, stating that by so doing they would in no way be disloyal to the Emperor. Luckily for the Marshal, the arrival of Sir Arthur Wellesley and the English army, before the plot could succeed, once and for all blew aside this cloudy attempt at kingship. For the Emperor, on hearing of the affair, although he pardoned the Marshal, saying, "I remember nothing but Austerlitz," still wrote in the same despatch "that it would have been a crime, clear lèse majesté, an attack on the imperial dignity," and added that it was no wonder that the army grew discontented, since the Marshal was working, not for France, but for himself, and that disobedience to the Marshal's orders was quite justified. For once, then, the Marshal, usually so clever and cautious, had allowed ambition to run away with prudence. Meanwhile the military situation grew day by day more disquieting. In the French army there was a section of the officers ready to declare against the Empire whenever a chance occurred, and one of them, Argenton by name, actually entered into a treasonable negotiation with Sir Arthur Wellesley. It was thanks to the discovery of this plot that the Marshal first got information of his enemies' projected advance.

With thirty thousand English marching against him and Spanish and Portuguese forces across the main line of retreat, it was impossible to expect to hold Oporto, and accordingly the Marshal began preparations for withdrawal. But having secured, as he thought, all the boats on the Douro, he concluded that he could only be attacked by a force ferried across at the river mouth by the boats of the English fleet. Consequently he kept no watch up stream. So complete was the surprise that an hour after the enemy had effected a landing above the town the Marshal, who had been up all night, was still in bed; his staff were quietly breakfasting when an officer galloped up with the news of the crossing. Soult could do nothing else but give the order to retreat by whatever means possible, and it was fortunate for the French that the pursuit was not pushed harder. But once he had grasped the situation he made amends for his previous neglect of supervision and showed himself the Soult of Austerlitz and Eylau. Sacrificing his baggage, his guns, and his military chest, guided by a Spanish pedlar, he made a most astounding march through the rugged region of Tras os Montes. Crossing lofty passes, forcing gorges in the teeth of hostile bands of peasantry and guerillas, by hard fighting and magnificent marching he brought his troops to safety. The campaign of Oporto did not add to the Marshal's reputation; his political ambition was the cause of all the disaster, for it prevented him from supervising his subordinates' operations. It was his fault that there was no proper road for retreat and that he was surprised by the English army. Still, though he had committed great faults, he had shown a surprising ability in extricating himself from their consequences.

When Soult reached Lugo, in Spain, he found his rival Ney, from whom he begged stores and equipments, and with whom he was bound to confer on the general situation. Ney at first magnanimously granted the Marshal's requests. But unfortunately the men of Ney's corps greeted the armed rabble which followed Soult's standards with jeers and execrations, and the quarrel spread from the men to the officers and at last to the Marshals; so fierce were Ney's taunts that Soult actually drew his sword and a duel was with difficulty averted. Thereafter Soult, while promising to co-operate with Ney in the pacification of Galicia, actually did nothing and seriously compromised his rival, whereon Ney refused to obey any orders given by the Duke of Dalmatia. Such was the situation when a summons from Madrid called the two Marshals to the succour of Joseph, who was threatened by the combined armies of Cuesta and Sir Arthur Wellesley in the valley of the Tagus. The Marshals arrived in time to save Madrid, but not in time to surround the Allies, who escaped south across the Tagus, and the one chance of success the Spanish offered them was lost, since Soult, eager for personal aggrandisement, attacked Albuquerque before Marshal Victor had time to arrive on the scene of action. The consequence of this was far-reaching, for Victor, like Ney, refused in future to work in conjunction with Soult. Moreover, when a council was held to decide on the next operations, and Soult, wisely, no doubt, insisted that at Lisbon lay the key to the situation, all the other Marshals voted against his scheme, as each one determined that he would not be made subordinate to the Duke of Dalmatia. Soult accordingly had to content himself with occupying the valley of the Tagus, while the other Marshals returned to the districts which had been allotted to them before the allied advance on Madrid.

While contemplating this unsatisfactory situation the Duke of Dalmatia was rejoiced to receive a despatch from the Emperor appointing him major-general of the forces in Spain in place of Jourdan and entrusting him with the invasion of Andalusia. Before setting out for the South, Soult had the satisfaction of completely routing the Spaniards at Ocaña. It was early in 1810 that he entered Andalusia and seized Seville, Granada, and Malaga. The Marshal found himself in the congenial position of absolute ruler of the richest provinces of Spain. But though the important towns fell easily, and with them the accumulated riches of centuries, the people remained sullenly hostile, and bands of armed peasantry hung ever on the rear and flanks of the French columns, and stragglers and despatch-riders were found by the roadside with their throats cut. To meet this situation, at the Emperor's orders Soult issued a proclamation setting forth that whereas Joseph Bonaparte was King of Spain and no Spanish Government existed, all Spaniards taken in arms were rebels against his Catholic Majesty and would be immediately shot. The Cortes from Cadiz replied by at once issuing a counter-proclamation stating that for every Spaniard executed and for every house burned three Frenchmen should be hung. Still, in spite of this war of reprisals, the French gradually tightened their grip on Southern Spain, and soon Cadiz remained the only important fortress still in the hands of the enemy. The Marshal found it was impossible to take this important position by storm, and contented himself with masking it by a strong corps under Marshal Victor. Meanwhile he was busily engaged in organising the new government of Andalusia, and so successful were his efforts that neither the Spanish Government at Cadiz or the constant incursions of Spanish and British armies were able to shake his hold on that province. But wise and successful as were his methods, the glory of his rule was darkened by his harshness and greed. The churches and convents were ruthlessly despoiled of their treasures, and many a fine Murillo and Velasquez was despatched to Paris to decorate his salons.

In the eyes of the Duke of Dalmatia, Andalusia was a vast reservoir of wealth which might be used as a base from which a well-equipped force could threaten Lisbon, the real focus of all the opposition to the French domination of the Peninsula. It was in pursuance of this plan that he conciliated the municipal authorities, strengthened the police, and built up huge reserve magazines by a system of imposts so carefully arranged that they should not unduly press on the Spanish population. But unfortunately for the Duke's schemes they ran counter to those of King Joseph. For the Marshal determined to use the wealth of his rich provinces for the special object of an attack on the British power at Lisbon, but Joseph desired that the revenue thus acquired should be sent to assist him to maintain his kingly state. Soult, strong in his position as major-general and backed by the Emperor's approval, refused to listen to the demands of the King, and there began a struggle which did more than anything else to bring about the fall of the Napoleonic kingdom of Spain. In spite of the fact that the Marshal gradually wore down the guerillas, actually raised and trained large bodies of Spanish troops, built up vast magazines and arsenals at Seville, exploited the lead mines at Linares and the copper mines of the Rio Tinto, established foundries for military accessories, and fitted out privateers, the jealousy of Joseph brought the Marshal's great schemes to nought.

The continual and vexatious demands of the King acted in a most unfortunate way on Soult's character, for this stupid opposition so irritated his hard and egotistical nature that he saw in every scheme not planned by himself a desire to belittle his glory. Unfortunately for his own reputation and the success of the French arms, he allowed this feeling to obscure his judgment, and he refused to give more than a half-hearted co-operation to any measures not actually suggested by himself. Thus it was that, in spite of the commands of the Emperor and the entreaties of Joseph, he refused to make any attempt to co-operate with Masséna in his advance on Portugal until it was too late. Then, when he actually did advance, he showed all his old energy and skill, for in fifty days he mastered four fortresses and invested a fifth, he captured twenty thousand prisoners and killed or dispersed ten thousand men; but he disregarded the main objective, the expulsion of the English from Lisbon, and contented himself with the siege of Badajoz, and thus, while winning a fortress, he lost a kingdom. From want of his co-operation Masséna was forced to retreat, and the grip of the English on the Peninsula was more firmly established than ever.

Badajoz was soon to prove itself a place of ill omen for Soult, for a few months later, when an Anglo-Portuguese army under Beresford laid siege to it, he was forced to come to its rescue. It was in the attempt to relieve this fortress that the terrible battle of Albuera was fought. At the commencement of the fight the Marshal, by a masterly manœuvre, threw himself across the allied right flank and seized the hill that dominated the position, and it looked as if the allied lines were bound to be crumpled up. But a brigade of English infantry stood firm amid the rout, and with measured volleys checked the victorious advance of the elated French. Soult, by every effort of voice and gesture, attempted to force his veterans to face the foe, but in vain. "Nothing could conquer that astounding infantry. No sudden burst of undisciplined valour, no nervous enthusiasm weakened the stability of their order: their flashing eyes were bent on the dark columns in their front, their measured tread shook the ground, their dreadful volleys swept away the head of every formation, their deafening shouts overpowered the discordant cries that broke from all parts of the tumultuous crowd as slowly, and with a horrid carnage, it was pushed by the incessant vigour of the attack to the farthest edge of the hill. In vain did the French reserve mix with the struggling multitude to sustain the fight: their efforts only increased the immediate confusion, and the mighty mass, breaking off like a loosened cliff, went headlong down the steep. The rain flowed after in a stream discoloured by blood: and eighteen hundred unwounded men, the remnant of six thousand unconquerable British soldiers, stood triumphant on the fatal hill." Thus Napier describes the battle of Albuera. So nearly a magnificent victory for the French: turned by British valour into a defeat. But it was not only the valour of the enemy which cost Soult his success, it was his own errors. The commencement of the attack was a magnificent conception, but the Marshal failed to understand the tactics of his enemy, and it was his blind attempt to crush the line with heavy columns which allowed the English musket fire to annihilate his dense masses. After the cessation of the combat he committed another great fault. Though his attack had been beaten back, it was known that the Allies had suffered much more severely than the French, and on the strength of this he claimed a "signal victory"! But instead of holding his ground he withdrew a day later, whereas if he had shown a confident front Beresford would have been bound to retire, and Badajoz would have been relieved. After the battle of Albuera, Soult was reinforced by the Army of Portugal under Marmont; but discord soon broke out between the two Marshals, the Duke of Dalmatia maintaining that the way to attack Lisbon was from his own base in the south, and the Duke of Ragusa advocating the northern route. After lying together for some time the two armies separated, and Soult moved south to complete his operations against Cadiz and Gibraltar. It was while the Marshal was thus engaged, early in 1812, that the Duke of Wellington suddenly captured Ciudad Rodrigo and Badajoz, and was thus able, after defeating Marmont at Salamanca, to march in the summer on Madrid. Soult replied to Joseph's summons to come to his help by telling him that his best policy was to join him in Andalusia and make a counter-stroke at Lisbon. But the King refused to listen to this wise advice, so the Marshal was obliged to give up all his achievements and go to Joseph's help. Meanwhile the King wrote complaining to the Emperor, but Napoleon replied that Soult was the "only military head" in Spain, and could not be moved. But after more bickering, early in 1813, Joseph wrote to say that if the Marshal remained in Spain he himself must leave the country, and the Emperor, anxious to regain his military prestige, so weakened by the Russian campaign, was glad to summon the Duke of Dalmatia to the Grand Army. But Soult's gloomy prophecy was soon fulfilled that "the loss of Andalusia and the raising of the siege of Cadiz are events that will be felt throughout the whole of Europe." The Marshal's service at the head of the Imperial Guard was terminated by the news of the fatal battle of Vittoria; for the Emperor immediately hurried him back to try to prevent the English from forcing the barrier of the Pyrenees.

The Duke of Dalmatia gladly accepted the mission, in spite of the repugnance of the Duchess, who hated Spain, where, as she said, "nothing is got but blows." So hearty was her dislike of the country that she actually went to the Emperor saying her husband was too shattered in health for the task. But she met with a stern rebuff: "Madam," said Napoleon, "recollect I am not your husband; if I were, you should conduct yourself very differently."