Battle of Atoleiros

The Battle of Atoleiros (Portuguese pronunciation: [ɐtuˈlɐjɾuʃ]) took place on 6 April 1384, between a Portuguese force and a punitive expedition from Castile sent by John I. The battle took place near the population centre of the same name[12] in Alentejo. It was the first major battle of the 1383–1385 Crisis.

Battle of Atoleiros
Part of 1383–1385 Crisis
Date 6 April 1384 Location Atoleiros, Alentejo, Portugal 39.021°N 7.626°W Result Portuguese victory[1]
Belligerents
Kingdom of Portugal	Crown of Castile
Commanders and leaders
Nuno Álvares Pereira	Fernando Sanchez de Tovar Pedro Álvares Pereira Pero Gonzalez de Sevilla † Martim Anes de Barundo
Strength
1,400 men:[2][3] 1,000 foot soldiers[4] 300 cavalry[5] 100 crossbowman[6]	5,000 men[7] 3,000 foot soldiers 2,000 cavalry[8]
Casualties and losses
No casualties[9][10]	Heavy[11]

Nuno Álvares Pereira had been chosen to protect the frontier in this area, amid fear that a Castilian force could enter Portugal here. He left Lisbon with 1,000 infantry, adding to the strength of his forces on his way to Atoleiros. The Castilian army consisted of some 5,000 men, mostly cavalry, which was besieging the village of Fronteira. As Pereira approached, the Castilians sent an emissary to him, attempting to persuade him to retire. He refused, and the Castilians advanced to meet him, lifting the siege. The Portuguese formed a defensive square. In the short battle that followed, the Castilian cavalry was unable to break the Portuguese formation, suffering heavy losses. The Portuguese suffered none, and the Castilians withdrew.

The battle of Atoleiros represents the first effective use of “square tactics” on the battleground. This tactic, in which groups of infantry armed with both missile and hand-to-hand weapons defended themselves from all directions, was so successful that it was still in use over 500 years later during the Napoleonic Wars against mass French cavalry attacks, and during the Zulu War against huge masses of predominantly spear-armed infantry. It was especially effective when the infantry had to fight against strong cavalry.

See also

• History of Portugal
• Treaty of Ayllón
• Interregnum
• Treaty of Windsor (1386)
• João das Regras
• Hundred Years War
• Philippa of Lancaster

Notes

1. Tony Jaques, p.81
2. Conceição, p.47
3. Sylva, p.57
4. Conceição, p.47
5. Conceição, p.47
6. Conceição, p.47
7. Affreizo, p.96
8. Castro, p.197
9. History of Portugal, The first engagement of the war was fought by Nuno Álvares, who, despatched to reinforce the supporters of Avis in the Alentejo, met a superior Castilian force on April 6 at Atoleiros near Estremós, and defeated it, according to tradition without loss p.176
10. Sylva, p.65
11. Castro, p.198
12. "Archived copy". Archived from the original on 2013-01-20. Retrieved 2013-06-23.CS1 maint: archived copy as title (link)

References

• Tony Jaques, Dictionary of Battles and Sieges: A-E (2007) ISBN 0-313-33536-2
• History of Portugal: Pamphlet Collection (197?) ISBN 1-00-128780-0
• Cláudio da Conceição, Gabinete historico: Desde 1325 até 1580 (1818)
• José Soares da Sylva, Memorias para a historia de Portugal: que comprehendem o governo del rey D. Joaõ o I., do anno de mil etrezentos e oitenta e tres, até o anno de mil e quatrocentos e trinta e tres (1731)
• José María da Graça Affreizo, Compendio de historia de Portugal (1885)
• Damião António de Lemos Faria e Castro, Historia geral de Portugal, e suas conquistas (1786)