Massena's plan of attack was simple and daring. Ney was to climb the steep front on the English left, and assail the light division under Craufurd; Regnier, with a corps d'élite, was to attack the English left, held by Picton's division. Regnier formed his attack into five columns while the stars were yet glittering coldly in the morning sky. They had first to plunge into the savage depths of the ravine, and then climb the steep slope leading to the English position. The vigour of the attack was magnificent. General Merle, who had won fame at Austerlitz, personally led the charge. At a run the columns went down the ravine; at a run, scarcely less swift, they swept up the hostile slope. The guns smote the columns from end to end, and the attack left behind it a broad crimson trail of the dead and dying. But it never paused. A wave of steel and fire and martial tumult, it swept up the hill, broke over the crest in a spray of flame, brushed aside a Portuguese regiment in its path like a wisp of straw, and broke on the lines of the third division.

The pressure was too great for even the solid English line to sustain; it, too, yielded to the impetuous French, part of whom seized the rocks at the highest point of the hill, while another part wheeled to the right, intending to sweep the summit of the sierra. It was an astonishing feat. Only French soldiers, magnificently led and in a mood of victory, could have done it; and only British soldiers, it may be added, whom defeat hardens, could have restored such a reverse.

Picton was in command, and he sent at the French a wing of the 88th, the famous Connaught Rangers, led by Colonel Wallace, an officer in whom Wellington reposed great confidence. Wallace's address was brief and pertinent. "Press them to the muzzle, Connaught Rangers; press on to the rascals." There is no better fighting material in the world than an Irish regiment well led and in a high state of discipline, and this matchless regiment, with levelled bayonets, ran in on the French with a grim and silent fury there was no denying. Vain was resistance. Marbot says of the Rangers that "their first volley, delivered at fifteen paces, stretched more than 500 men on the ground"; and the threatening gleam of the bayonet followed fiercely on the flame of the musket.

The French were borne, shouting, struggling, and fighting desperately, over the crest and down the deep slope to the ravine below. In a whirlwind of dust and fire and clamour went the whole body of furious soldiery into the valley, leaving a broad track of broken arms and dying men. According to the regimental records of the 88th, "Twenty minutes sufficed to teach the heroes of Marengo and Austerlitz that they must yield to the Rangers of Connaught!" As the breathless Rangers re-formed triumphantly on the ridge, Wellington galloped up and declared he had never witnessed a more gallant charge.

But a wing of Regnier's attack had formed at right angles across the ridge. It was pressing forward with stern resolution; it swept before it the light companies of the 74th and 88th regiments, and unless this attack could be arrested the position and the battle were lost. Picton rallied his broken lines within sixty yards of the French muskets, a feat not the least marvellous in a marvellous fight, and then sent them furiously at the exulting French, who held a strong position amongst the rocks. It is always difficult to disentangle the confusion which marks a great fight. Napier says that it was Cameron who formed line with the 38th under a violent fire, and, without returning a shot, ran in upon the French grenadiers with the bayonet and hurled them triumphantly over the crest. Picton, on the other hand, declares that it was the light companies of the 74th and the 88th, under Major Smith, an officer of great daring—who fell in the moment of victory—that flung the last French down over the cliff. Who can decide when such experts, and actors in the actual scene, differ?

The result, however, as seen from the French side, is clear. The French, Marbot records, "found themselves driven in a heap down the deep descent up which they had climbed, and the English lines followed them half-way down firing murderous volleys. At this point we lost a general, 2 colonels, 80 officers, and 700 or 800 men." "The English," he adds in explanation of this dreadful loss of life, "were the best marksmen in Europe, the only troops who were perfectly practised in the use of small arms, whence their firing was far more accurate than that of any other infantry."

A gleam of humour at this point crosses the grim visage of battle. Picton, on lying down in his bivouac the night before the battle, had adorned his head with a picturesque and highly coloured nightcap. The sudden attack of the French woke him; he clapped on cloak and cocked hat, and rode to the fighting line, when he personally led the attack which flung the last of Regnier's troops down the slope. At the moment of the charge he took off his cocked hat to wave the troops onward; this revealed the domestic head-dress he unconsciously wore, and the astonished soldiers beheld their general on flame with warlike fury gesticulating martially in a nightcap! A great shout of laughter went up from the men as they stopped for a moment to realise the spectacle; then with a tempest of mingled laughter and cheers they flung themselves on the enemy.

Meanwhile Ney had formed his attack on the English left, held by Craufurd and the famous light division. Marbot praises the characteristic tactics of the British in such fights. "After having, as we do," he says, "garnished their front with skirmishers, they post their principal forces out of sight, holding them all the time sufficiently near to the key of the position to be able to attack the enemy the instant they reach it; and this attack, made unexpectedly on assailants who have lost heavily, and think the victory already theirs, succeeds almost invariably." "We had," he adds, "a melancholy experience of this art at Busaco." Craufurd, a soldier of fine skill, made exactly such a disposition of his men. Some rocks at the edge of the ravine formed natural embrasures for the English guns under Ross; below them the Rifles were flung out as skirmishers; behind them the German infantry were the only visible troops; but in a fold of the hill, unseen, Craufurd held the 43rd and 52nd regiments drawn up in line.

Ney's attack, as might be expected, was sudden and furious. The English, in the grey dawn, looking down the ravine, saw three huge masses start from the French lines and swarm up the slope. To climb an ascent so steep, vexed by skirmishers on either flank, and scourged by the guns which flashed from the summit, was a great and most daring feat—yet the French did it. Busaco, indeed, is memorable as showing the French fighting quality at its highest point. General Simon led Loison's attack right up to the lips of the English guns, and in the dreadful charge its order was never disturbed nor its speed arrested. "Ross's guns," says Napier, "were worked with incredible quickness, yet their range was palpably contracted every round; the enemy's shot came singing up in a sharper key; the English skirmishers, breathless and begrimed with powder, rushed over the edge of the ascent; the artillery drew back"—and over the edge of the hill came the bearskins and the gleaming bayonets of the French! General Simon led the attack so fiercely home that he was the first to leap across the English entrenchments, when an infantry soldier, lingering stubbornly after his comrades had fallen back, shot him point-blank through the face. The unfortunate general, when the fight was over, was found lying in the redoubt amongst the dying and the dead, with scarcely a human feature left. He recovered, was sent as a prisoner to England, and was afterwards exchanged, but his horrible wound made it impossible for him to serve again.

Craufurd had been watching meanwhile with grim coolness the onward rush of the French. They came storming and exultant, a wave of martial figures, edged with a spray of fire and a tossing fringe of bayonets, over the summit of the hill; when suddenly Craufurd, in a shrill tone, called on his reserves to attack. In an instant there rose, as if out of the ground, before the eyes of the astonished French, the serried lines of the 43rd and 52nd, and what a moment before was empty space was now filled with the frowning visage of battle. The British lines broke into one stern and deep-toned shout, and 1800 bayonets, in one long line of gleaming points, came swiftly down upon the French. To stand against that moving hedge of deadly and level steel was impossible; yet each man in the leading section of the French raised his musket and fired, and two officers and ten soldiers fell before them. Not a Frenchman had missed his mark! They could do no more. "The head of their column," to quote Napier, "was violently thrown back upon the rear, both flanks were overlapped at the same moment by the English wings, and three terrible discharges at five yards' distance shattered the wavering mass." Before those darting points of flame the pride of the French shrivelled. Shining victory was converted, in almost the passage of an instant, into bloody defeat; and a shattered mass, with ranks broken, and colours abandoned, and discipline forgotten, the French were swept into the depths of the ravine out of which they had climbed.