The
Third Portuguese campaign had started with the construction of the Lines of Torres Vedras and the
Siege of Ciudad Rodrigo.
Operations In 1810,
Emperor Napoleon ordered Masséna to drive the British from Portugal. Accordingly, the French marshal began the siege of Ciudad Rodrigo in April. The Spanish garrison held out until 9 July when the fortress fell. The
Battle of the Côa was fought soon after. The
Siege of Almeida ended suddenly with a massive explosion of the fortress magazine on 26 August. With all obstacles cleared from their path, the French could march on
Lisbon in strength. It was important to delay the French until the defences being built around Lisbon, the Lines of Torres Vedras, could be completed. Using selective demolition of bridges and roads, Wellington restricted the choice of routes the French could use and slowed their advance. At the end of September, they found Wellington's army drawn up on the ridge of Bussaco. The ridge, which at its highest rising to , lies at a right angle to the main road to
Coimbra and thence to Lisbon, providing one of the few and certainly the best defensive position on the French route of march.
Allied organisation Wellington had brought together six British infantry divisions: • the
Light, under
Brigadier General Robert Craufurd • the
1st, led by
Major General Brent Spencer • the
2nd, commanded by Major General
Rowland Hill • the
3rd, under Major General
Thomas Picton, with attached Portuguese brigade • the
4th, led by Major General
Lowry Cole, with attached Portuguese brigade • the
5th, under Major General
James Leith, with attached Portuguese brigade In addition, the
Portuguese Army (newly re-trained by the British under the direction of Lieutenant General
William Carr Beresford) supplied a two-brigade Portuguese infantry division under Major General John Hamilton, and three independent Portuguese brigades led by Brigadier Generals
Denis Pack, Alexander Campbell and John Coleman. Brigadier Generals
George De Grey,
John Slade,
George Anson and
Henry Fane led four British cavalry brigades, plus four regiments of Portuguese cavalry. In batteries of six guns each, there were six British (
Ross RHA,
Bull RHA, Thompson, Lawson, two unknown), two
King's German Legion (Rettberg, Cleeves) and five Portuguese (Rozierres, Da Cunha Preto, Da Silva, Freira, Sousa) batteries under Brigadier General Edward Howorth. The Anglo-Portuguese army numbered 50,000, with half being Portuguese.
French organisation Masséna's army of 60,000 included the II Corps under Reynier, the VI Corps led by Ney, the VIII Corps under Major General
Jean Andoche Junot and a cavalry reserve led by Major General
Louis Pierre, Count Montbrun. The divisions of Major Generals
Pierre Hugues Victoire Merle and
Étienne Heudelet de Bierre made up Reynier's corps. Ney's corps had three divisions under Major Generals
Jean Marchand,
Julien Mermet and
Louis Loison. Junot had the divisions of Major General
Bertrand Clauzel and Mag Gen
Jean-Baptiste Solignac. Each French corps had the standard brigade of light cavalry.
General of Brigade (Brigadier General)
Jean Baptiste Eblé, Masséna's artillery chief, commanded 112 guns.
Plans Wellington posted his army along the crest of Bussaco Ridge, facing east. To improve his lateral communications, he had previously ordered his four officers from the
Royal Corps of Engineers to cut a road that ran the length of the ridge on the reverse slope. Cole held the left (north) flank. Next came Craufurd, Spencer, Picton and Leith. Hill held the right (south) flank with Hamilton's men attached. Masséna, believing he easily outnumbered the British and goaded by Ney and other officers to attack the British position rather than go around it, ordered a reconnaissance of the steep ridge. Very few of Wellington's troops were visible, as they remained on the reverse slope and were ordered not to light cooking fires. The French general planned to send Reynier at the centre of the ridge, which he believed to be the British right flank. Once the II Corps attack showed some signs of success, Masséna would launch Ney's corps at the British along the main road. The VIII Corps stood behind the VI Corps in reserve. While Ney announced that he was ready to attack and conquer, Reynier suddenly had second thoughts, predicting his attack would be beaten. An older authority states the following: == Battle ==