Beresford’s train and guns having joined him beyond the river on March 8th, he moved to Olivenza on the 9th, in an order of march ready to deploy into an order of battle in case Latour-Maubourg should turn up with his small field force. The town was summoned on the same afternoon, and when the governor refused to surrender, the 4th Division, still almost unable to move for want of the shoes which were daily expected from Lisbon, was left to besiege it, with the aid of heavy guns to be brought from Elvas, only fifteen miles away. The extreme weakness of the garrison was not known, or the Marshal would not have wasted time by ordering regular approaches to be made. The rest of the army bivouacked on the Badajoz road a few miles beyond Olivenza, and on the following day occupied Valverde, and pushed its cavalry to Albuera, cutting the chaussée between Badajoz and Seville. No enemy could be found, and it was ascertained that Latour-Maubourg’s rearguard was at Santa Marta, ten miles to the south, and the rest of his troops far beyond it. On the 11th the infantry, minus the 4th Division, were at Albuera, while the bulk of the cavalry marched to find out how far southward the enemy was ready to withdraw.
Central Estremadura, at any rate, was now in Beresford’s hands, and he was in a position to carry out Wellington’s orders to drive the 5th Corps over the Sierra Morena and invest Badajoz. In accordance with his instructions he had seen Castaños on March 30th, and settled with him that the wrecks of the old Army of Estremadura—now about 1,000 horse and 3,000 foot—should join in the campaign. Castaños, who showed himself both eager and obliging, had promised that his infantry should seize the bridge of Merida, and that, when it was occupied, his cavalry, under Penne Villemur, should join in the movement to sweep Latour-Maubourg over the mountains, operating on the eastern road (Merida-Ribera-Usagre-Llerena), while the allied cavalry took the western one (Albuera-Los Santos-Fuente Cantos-Monasterio). These promises were carried out: Morillo’s infantry division occupied Merida on the 10th, and next day Penne Villemur’s cavalry had reached Almendralejo.
The siege of Olivenza gave little trouble. The only difficulty was the improvising of a siege-train, even on the very modest scale required to deal with such a weak place. It was invested, as we have seen, on the 9th. On the 10th Major Alexander Dickson of the Portuguese artillery, and Captain Squire of the Engineers reconnoitred the place, and determined that the proper starting-point for the attack was the same ruined lunette, outside the walls, which the French had chosen as their first base in January. On the night of the 11th this point was occupied with the loss of one man only, killed by the enemy’s ill-directed fire. A battery for six guns was constructed in the gorge of the ruined work, but the pieces themselves, which Dickson went to choose from Elvas, did not arrive till the 14th; the cask-bridge at Jerumenha being too weak to bear them, they and their ammunition had to be ferried over on the flying bridges. The six 24-pounders were placed in position that same night. At daybreak they opened, and by the time that they had fired seventy rounds each, long ere noon, a practicable breach was made in the nearest bastion. Thereupon the governor, seeing that to have stood an assault with his handful of men would have been madness, surrendered at discretion. He marched out with only 9 officers and 357 men under arms, giving up also 96 sick, and some commissaries and medical officers. Several of his miserable stock of fifteen guns were found to be practically useless save to make a noise, for (as has already been mentioned) they were fixed not on proper carriages, but on the main timbers and wheels of ox-carts, and could not be elevated or depressed. The governor deserves some credit for having held out five days; if the Allies had been aware of the weakness of the garrison, they would have swamped it at once by an escalade.
On the next morning (April 16th) Cole and the 4th Division, who had at last received their much-needed supply of shoes, marched to join the rest of the army. A Portuguese garrison was thrown into Olivenza, but there was no intention to hold it, if the enemy should come up again. It was only a man-trap. Beresford might now have invested Badajoz, if it had pleased him so to do. But he thought it better to drive Latour-Maubourg completely out of Estremadura, and across the Sierra Morena, before taking the siege in hand. The main reason for his resolve was that it was clear that a week or ten days at least would be required to organize a battering-train at Elvas, for the bombardment and breaching of the fortress, and he thought it more profitable to spend this interval in pushing the French as far from Badajoz as possible, rather than in sitting down before it to no purpose, and waiting for the appearance of the siege-train. It was apparently an omission on Wellington’s part not to have ordered General Leite, the governor of Elvas, to begin making preparations for the gathering of a park and the collection of a large body of artillerymen, on the same day that he finally launched Beresford’s[341] force into Estremadura (March 16). But this had not been done, and it was not till April 18th that Major Alexander Dickson, who had already learnt what was available in Elvas while organizing the little train required for the capture of Olivenza, was directed to take in hand the much larger and more difficult task of collecting the men and material destined for the siege of a first-class fortress[342]. This delay seems extraordinary: did Wellington think on March 16th that Badajoz, only five days in the hands of the French at the moment, would be incapable of defence when Beresford should appear in front of it about the 25th of that same month? It is quite possible that this would have been the case, and that the French would have blown it up, if the Jerumenha bridge had been standing ready for the passage of the army on the next day, as Wellington had supposed. The Dispatches give us no help on this point; Wellington speaks of investing Badajoz, but gives no hint as to how the investment was to be followed up, till March 27th, when he observes to Beresford that ‘Elvas must supply the means for the attack on Badajoz, if possible; if it has them not, I must send them there; this will take time, but that cannot be avoided[343].’
Elvas, as matters turned out, did ‘supply the means,’ but the resources to be found there were so limited that, as was wittily said at the time by Picton, Wellington, both in May and in June 1811, ‘sued Badajoz in forma pauperis,’ and if the place had fallen it would have been almost a miracle, for no sufficient material to ensure its capture had been collected even by the month of June. The main difficulty arose from the fact that Wellington had never been provided by his Government with a siege-train. Looking upon the war in Portugal as essentially defensive in character, the Home authorities had forgotten that it might have offensive episodes, and that a great siege might not impossibly be one of them. The British army in Portugal possessed nothing in the way of artillery save the ordinary horse and field batteries (or ‘troops’ and ‘companies’ as they were then called), with their 3, 6, and 9-pounder guns. If a few hundred men were told off to heavy pieces in the Lisbon lines during the preceding autumn, it was not that they were intended for such service—they were parts of incomplete or unhorsed batteries, which had not taken the field when the campaign of 1810 began, and were waiting to complete their equipment. The British army in Portugal was absolutely destitute of artillery destined for and trained to the working of siege-guns. The only British pieces of heavy calibre used in the spring of 1811 were ships’ cannon lent by the commander of the squadron in the Tagus.
For such work as was now before them, therefore, the Allies had to depend entirely on what the Portuguese arsenals could supply. But all that could be found in them was now mounted on the interminable redoubts of the Lisbon lines, save such as had been sent to strengthen Elvas, Abrantes, and Peniche. Practically every gun in Portugal was defending some work, small or great; they had all been requisitioned down to the most antique and imperfect pieces. The walls of Elvas were a perfect museum of ancient artillery: among the heaviest pieces, carefully sorted out because of their calibre, and chosen for the siege-train that was to batter Badajoz, were to be seen not only many 24-pounders bearing the arms and cyphers of the earliest kings of the house of Braganza, João and Affonso, but still older brass guns of enormous length, showing the names of Philip III and IV of Spain, and dating back to the years before 1640, when Portugal was a discontented province of the Hapsburg kings[344]. It seems almost incredible, but is actually a fact, that some of the cannon used by Wellington’s men against Badajoz were just two hundred years old. Those that were not quite so antique were mainly pieces of early eighteenth-century pattern, without the later improvements invented by the French scientific artillerymen of the days of Louis XV and Louis XVI: for the Lisbon arsenal had persisted in using old models long after they had been dropped in the larger countries of Europe.
The gunners for the siege were of course mainly Portuguese, though a few were afterwards drawn from the imperfect British companies at Lisbon[345]. Those first employed were borrowed from the garrison of Elvas; they comprised a great number of recruits only partially trained, but did their best. It was the guns, not the men, that were at fault—or rather, both the guns and the ammunition, for the Portuguese cannon-balls in store, dating from all ages, varied much in size, and Dickson had to sort each convoy of 24 lb. or 12 lb. shot into batches, some of which were rather small and some rather large, and to apportion them to particular pieces. The old brass seventeenth-century guns, being generally worn from long use, needed the biggest shot, and even these were so large in the bore that the balls fitted loosely, and the discharge suffered from ‘windage.’ The impact of such shot was not half what it should have been[346]. With such tools to employ, it is not wonderful that the Anglo-Portuguese artillery made a poor show at the first siege of Badajoz. But worst of all was the fact that the number of pieces was at first far too small—Elvas could only spare a certain part of the armament of its walls, and it was not till some weeks had passed that guns, British and Portuguese, could be brought up from Lisbon, and with them drafts of artillerymen of both nations. But twenty-three guns and 400 artillerymen were all that Dickson could collect for the first siege, and these were not ready till April was out; indeed, it was no small achievement to organize a siege-train of any sort between April 18th and May 6th, from the sole resources of the fortress of Elvas. Of the additional hindrance caused by the small numbers and the inexperience of the engineer officers, and the total lack of trained sappers, we shall speak in the proper place.
The space of time before the siege-train for Badajoz could be got ready was employed by Beresford in clearing southern Estremadura of the enemy. Having left a brigade of the 2nd Division at Talavera Real, a battalion of the Lusitanian Legion (from Cole’s division) in Olivenza, and some squadrons of Portuguese cavalry round the southern front of Badajoz, to watch the garrison, the army marched for Santa Marta and Zafra, on the high-road to Seville, with its own cavalry in front, and Penne Villemur’s Spanish squadrons on the left (April 16th-18th). The bulk of the infantry went no further forward, because Latour-Maubourg withdrew into the Sierra Morena on the rumour of its approach. The cavalry continued the pursuit—at Los Santos on the 16th its leading regiment, the 13th Light Dragoons, had a smart affair with the French rearguard (2nd Hussars), and routed it with the loss of three officers and many men[347]. After this Latour-Maubourg never stopped till he had reached Guadalcanal, on the borders of Andalusia, evacuating Llerena and the other towns on the Estremaduran slope of the mountains (April 19th). Beresford thereupon left his British cavalry at Zafra, and Penne Villemur at Llerena, to watch the passes, while he drew back his infantry divisions to take in hand the siege of Badajoz (April 20th), with the exception of the brigade of Colborne, which was sent out with some Spanish horse to demonstrate against Latour-Maubourg, and to drive him still further southward if he showed signs of irresolution.
While these operations were in progress, there was a short and unexpected diversion in the extreme south-west corner of Estremadura, caused by the appearance of an outlying French column in that quarter, which had no connexion with Latour-Maubourg. A word as to this is necessary, since its result was to bring a new Spanish force into Beresford’s sphere of operations. When Soult returned to Andalusia in the middle of March, his first care was to drive off Ballasteros and the other detachments which had been threatening Seville in his absence. They gave back into the Condado de Niebla, as has already been mentioned. But at the end of the month the situation was complicated by the news that an expedition from Cadiz, the division of Zayas, had landed at Moguer, in the estuary of the Rio Tinto, and seemed about to join Ballasteros. If this junction had been made, the force collected in the west would have been too large to be safely neglected. Wherefore Soult sent out General Maransin and the Prince of Aremberg, the former with seven battalions of Gazan’s division, and the latter with two cavalry regiments, to attack the Spaniards. At the approach of this column of 4,500 men Zayas re-embarked, losing 300 men from his rearguard in so doing (April 1). Ballasteros retired into the mountains. Maransin thought it his duty to endeavour to make an end of this active and elusive adversary, whose constant appearances and reappearances on the flank of Seville had caused so much trouble. Sending back his cavalry and guns, he plunged into the hills with his infantry, and for twelve days hunted Ballasteros up and down the rugged upper valleys of the Odiel and the Rio Tinto. On April 12th Ballasteros, gradually pushed northward, came down to Fregenal, on the borders of Estremadura, where he offered battle, but was beaten, and fled to Xeres de los Caballeros. Maransin pursued, and reached that place on the 11th, while Ballasteros retired to Salvatierra de los Barros, not far from Santa Marta, and close on the flank of Beresford’s army. Maransin, who had long been cut off from touch with other French detachments, was wholly unaware that he had run into the neighbourhood of a British force, and would have been captured, or defeated, if he had stayed a day longer at Xeres, for Ballasteros had called for help to Beresford, and the latter was preparing to throw two divisions upon his flank and rear[348]. Letters from Latour-Maubourg to Maransin, to warn him of his danger, were intercepted by the guerrilleros and sent to the British camp[349]. But an Afrancesado, one of the principal inhabitants of Xeres, warned the French general just before it was too late: and, hastily leaving his position at night, Maransin retired into Andalusia via Fregenal and Aracena, and ultimately joined Latour-Maubourg by a circuitous route.
Ballasteros stayed behind in Estremadura, and the allied force in that province was strengthened by his 3,500 men. But this was not all: the Regency at Cadiz resolved to place a considerable army in this direction, their own city being more than amply garrisoned, and expeditions to the south being unpopular since the fiasco that followed Barrosa. On April 25th General Blake took the two divisions of Zayas and Lardizabal (both of which had fought at Barrosa), and landed with them at Ayamonte, the port in the mouth of the Guadiana. From thence he moved up along the Portuguese frontier, and joined Ballasteros near Xeres de los Caballeros about a fortnight later. Between them they had over 10,000 infantry and about 800 cavalry, but few guns, for Blake found it difficult to horse the batteries that he had brought with him, and left all save six pieces behind, at Ayamonte, to follow when they could procure teams. They had not rejoined him four weeks later, when the battle of Albuera was fought. The presence of Blake was not altogether an unmixed benefit, for he was independent of Castaños, who commanded the ‘5th Army’ or old Estremaduran force, and the two generals were ancient rivals and did not seem likely to co-operate with any cordiality. But if Soult was to make his appearance for the relief of Badajoz, it was as well that the Allies should be as strong as possible on the front by which he must attack.