On the morning of the eighteenth Milhaud’s and Paris’s cavalry, riding at the head of the French army, crossed the Tagus at Aranjuez, and pressing forward met, between Ontigola and Ocaña, Freire’s horsemen moving at the head of Areizaga’s column, which on this day was strung out between La Zarza and Noblejas, marching hastily westward towards the high-road. The collision of Milhaud and Freire brought about the largest cavalry fight which took place during the whole Peninsular War. For Milhaud and Paris had eight regiments, nearly 3,000 men, while three of Freire’s four divisions were present, to the number of over 4,000 sabres. On neither side was any infantry in hand.
Sebastiani, who had come up with the light cavalry of his corps, was eager for a fight, and engaged at once. Charging the Spanish front line with Paris’s light horse, he broke it with ease: but Freire came on with his reserves, forming the greater part of them into a solid column—an odd formation for cavalry. Into this mass Milhaud charged with four regiments of dragoons. The heaviness of their formation did not suffice to enable the Spaniards to stand. They broke when attacked, and went to the rear in disorder, leaving behind them eighty prisoners and some hundreds of killed and wounded. The French lost only a few scores, but among them was Paris, the not unworthy successor of the adventurous Lasalle in command of the light cavalry division attached to the 4th Corps.
Moving forward in pursuit of the routed squadrons, Sebastiani approached Ocaña, but halted on discovering that there was already Spanish infantry in the town. The head of Areizaga’s long column had reached it, while the cavalry combat was in progress: the rest was visible slowly moving up by cross-roads from the east. Soult was at once apprised that the enemy’s army was close in his front—so close that it could not get away without fighting, for its train and rearguard were still far behind, and would be cut off if the main body moved on without making a stand.
Areizaga, though he had shown such timidity when faced by Sebastiani’s 9,000 men at Aranjuez, and by Victor’s 20,000 on the Tajuna, now offered battle to the much more formidable force which Soult was bringing up. He was indeed compelled to fight, partly because his men were too weary to move forward that night, partly because he wished to give time for his train to arrive and get on to the chaussée.
On the morning of the nineteenth his army was discovered drawn up in two lines on each side of the town of Ocaña. There were still some 46,000 infantry and 5,500 cavalry under arms despite of the losses of the late week[98]. The oncoming French army was smaller; though it mustered 5,000 horse it had only 27,000 foot—the Germans and Poles of Sebastiani, Mortier with nearly the whole of the 5th Corps, a brigade of Dessolles’ division, the King’s guards, and the cavalry of Milhaud, Paris, and Beauregard[99]. Victor was too far off to be available; having found the flooded Tagus hard to cross, he was on this day barely in touch with the extreme rearguard of Areizaga’s army which was escorting the train. Being nearly twenty miles from Ocaña, he could not hope to arrive in time for the general action, if it was to be delivered next morn. If Areizaga stood firm for another day, Victor would be pressing him from the flank and rear while the main army was in his front: but it was highly probable that Areizaga would not stand, but would retreat at night; all his previous conduct argued a great disinclination to risk a battle. Wherefore Soult and the King, after a short discussion[100], agreed to attack at once, despite their great numerical inferiority. In the open plain of La Mancha a difference of 16,000 or 17,000 infantry was not enough to outweigh the superior quality and training of the French army.
There is, so to speak, no position whatever at Ocaña: the little unwalled town lies in a level upland, where the only natural feature is a ravine which passes in front of the place; it is sufficiently deep and broad at its western end to constitute a military obstacle, but east of the town gradually grows slighter and becomes a mere dip in the ground. Areizaga had chosen this ravine to indicate the line of his left and centre; but on his right, where it had become so shallow as to afford no cover, he extended his troops across and beyond it. The town was barricaded and occupied, to form a central support to the line. There were olive-groves in the rear of Ocaña which might have served to hide a reserve, or to mark a position for a rally in case a retreat should become necessary. But Areizaga had made no preparation of this sort. His trains, with a small escort, had not arrived even on the morning of the nineteenth, but were still belated on the cross-roads from Noblejas and La Zarza.
The order of the Spanish army in line of battle is difficult to reconstruct, for Areizaga uses very vague language in the dispatch in which he explained his defeat, and the other documents available, though they give detailed accounts of some of the corps, say little or nothing of others. It seems, however, that Zayas, with the vanguard division, formed the extreme left, behind the deepest part of the ravine, with a cavalry brigade under Rivas on its flank and rear. He had the town of Ocaña on his right. Then followed in the line, going from left to right, the divisions of Vigodet, Giron, Castejon, and Lacy. Those of Copons, Jacomé, and Zerain appear to have formed a second line in support of the other four[101]. Vigodet’s left was in the town of Ocaña and strongly posted, but the other flank, where Lacy lay, was absolutely in the air, with no natural feature to cover it. For this reason Areizaga placed beyond it Freire, with the whole of the cavalry except the brigade on the extreme left under Rivas. Unfortunately the Spanish horse, much shaken by the combat of the preceding day, was a weak protection for the flank, despite its formidable numbers. The sixty guns of the artillery were drawn out in the intervals of the infantry divisions of the first and second line.
Soult’s plan of attack was soon formed. The ravine made the Spanish left—beyond Ocaña—inaccessible, but also prevented it from taking any offensive action. The Marshal therefore resolved to ignore it completely, and to concentrate all his efforts against the hostile centre and right, in the open ground. The scheme adopted was a simple one: Sebastiani’s Polish and German divisions were to attack the Spanish right wing, and when they were at close quarters with the enemy the main mass of the French cavalry was to fall upon Freire’s horse, drive it out of the field, and attack on the flank the divisions already engaged with the infantry. For this purpose Milhaud’s, Paris’s, and Beauregard’s regiments, more than 3,500 sabres, were massed behind the Poles and Germans. For a time their march would be masked by olive-groves and undulations of the ground, so that they might come in quite suddenly upon the enemy. Mortier with his first division—that of Girard—and a regiment of Gazan’s, followed in the rear of the Polish and German infantry, to support their frontal attack. Dessolles, with his own brigade and Gazan’s remaining one, took post opposite Ocaña, ready to fall upon the Spanish centre, when the attack to his left should have begun to make way. He had in his front the massed artillery of the 4th and 5th Corps, thirty guns under Senarmont, which took ground on a low knoll above the great ravine, from which they could both play upon the town of Ocaña and also enfilade part of the Spanish line to its immediate right—Vigodet’s division and half of Giron’s. Finally the King, with his guards and other troops, horse and foot, were placed to the right rear of Dessolles, to act as a general reserve, or to move against Zayas if he should attempt to cross the ravine and turn the French right.
The plan, despite of some checks at the commencement, worked in a satisfactory fashion. The German and Polish divisions of Leval and Werlé attacked Lacy’s and Castejon’s divisions, which gave back some little way, in order to align themselves with Vigodet who was sheltered by the slight eastern end of the ravine. The enemy followed and brought up six guns to the point to play upon the new position which the Spaniards had taken up. The forward movement was continuing, when suddenly to the surprise of the French, Lacy’s, Castejon’s, and Giron’s men, leaving their places in the line, made a furious counter-charge upon the Poles and Germans, drove them back for some distance, and threw them into disorder. This movement was no result of Areizaga’s generalship: he had betaken himself to the summit of the church-tower of Ocaña, an inconvenient place from which to issue orders, and practically left his subordinates to fight their own battle. Mortier was forced to bring forward Girard’s division to support his broken first line. It was hotly engaged with Lacy and Giron, when suddenly it felt the Spaniards slacken in their fire, waver, and break. This was the result of the intervention of a new force in the field. The great mass of French squadrons, which had been sent under Sebastiani to turn the Spanish right, had now come into action. Arriving close to Freire’s cavalry before it was discovered, it fell on that untrustworthy corps, and scattered it to the winds in a few minutes. Then, while three or four regiments followed the routed horsemen, the rest turned inwards upon the hostile infantry. The flanks of the first and second lines of Areizaga’s right were charged simultaneously, and hardly a regiment had time to get into square. Brigade after brigade was rolled up and dispersed or captured; the mass of fugitives, running in upon the troops that were frontally engaged with Girard, wrecked them completely. Of the five divisions of the Spanish left, a certain number of steady regiments got away, by closing their ranks and pushing ahead through the confusion, firing on friend and foe alike when they were hustled. But many corps were annihilated, and others captured wholesale. The last seems to have been the fate of nearly the whole of Jacomé’s division of the second line, as hardly a single unit from it is reported as rallied a month later, and the French accounts speak of a whole column of 6,000 men which laid down its arms in a mass before the light cavalry of the 4th Corps. Just as the Spanish right broke up, Dessolles with his two brigades, followed by the King’s reserve, crossed the ravine and attacked the town of Ocaña, and the two divisions—Vigodet and Copons—which lay in first and second line immediately to the east of it. These retired, and got away in better order than their comrades to the right. Of all the Spanish army only Zayas’s vanguard division, on the extreme left, now remained intact. Areizaga had sent it an order to cross the ravine and attack the French right, when he saw his army beginning to break up. Then, a few minutes later, he sent another order bidding it close to the right and cover the retreat. After this the Commander-in-Chief descended from his tower, mounted his horse, and fled. Zayas carried out the second order, moved to the right, and found himself encompassed by masses of fugitives from Giron’s, Castejon’s, and Lacy’s broken divisions, mixed with French cavalry. He sustained, with great credit to himself and his troops, a rearguard action for some miles, till near the village of Dos Barrios, where his line was broken and his men at last mixed with the rest of the fugitives[102].