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Battle of Atoleiros
Part of 1383–1385 Crisis
Raul Xavier Alegoria a D. Nuno Álvares Pereira IMG 8793.JPG
Raul Xavier, Allegory to D. Nuno Álvares Pereira: Atoleiros, Aljubarrota, Valverde , 1959, S. Jorge (Leiria)
Date 6 April 1384
Location
Atoleiros, Alentejo, Portugal
39°01′16″N 7°37′34″W / 39.021°N 7.626°W / 39.021; -7.626
Result Portuguese victory
Belligerents
PortugueseFlag1385.svg Kingdom of Portugal Royal Coat of Arms of the Crown of Castile (15th Century).svg 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:

  • 1,000 foot soldiers
  • 300 cavalry
  • 100 crossbowman

5,000 men

  • 3,000 foot soldiers
  • 2,000 cavalry
Casualties and losses
No casualties Heavy


The Battle of Atoleiros was an important fight that happened on April 6, 1384. It was between the Portuguese army and soldiers from Castile (modern-day Spain). This battle took place near a town called Fronteira in Alentejo, Portugal. It was the first big battle during a time of trouble in Portugal, known as the 1383–1385 Crisis.

Portugal's Defender

During the 1383–1385 Crisis, Portugal faced a big problem. The King of Portugal had died without a clear heir. This led to a fight for who would rule next. John I of Castile wanted to take over Portugal.

To protect Portugal, a brave leader named Nuno Álvares Pereira was chosen. His job was to guard the border area near Atoleiros. People were worried that Castilian forces might try to enter Portugal there.

Pereira Gathers His Army

Nuno Álvares Pereira left Lisbon with about 1,000 foot soldiers. As he traveled towards Atoleiros, more soldiers joined him. His army grew stronger with each step.

The Castilian Threat

Meanwhile, the Castilian army was much larger. They had about 5,000 men. Most of these were cavalry, meaning soldiers who fought on horseback. The Castilian army was trying to capture the village of Fronteira. They had surrounded it.

A Refusal to Retreat

As Pereira and his army got closer, the Castilians sent a messenger to him. They tried to convince him to turn back and not fight. But Pereira was determined. He bravely refused to retreat.

When Pereira refused, the Castilians stopped their attack on Fronteira. They then moved forward to meet Pereira's army.

The Battle Begins

The Portuguese army, led by Pereira, got ready for the fight. They formed a special defensive shape called a "square." This meant their soldiers stood close together, facing all directions. This formation was very strong against attacks.

A Quick Victory

The battle that followed was short but intense. The Castilian cavalry tried to break through the Portuguese square. But they could not. The Portuguese formation was too strong. The Castilians suffered many losses.

Amazingly, the Portuguese army had no casualties at all. Not a single soldier was lost. After heavy losses, the Castilians gave up and left the battlefield.

The Power of Square Tactics

The Battle of Atoleiros was special for another reason. It was one of the first times that "square tactics" were used so well in a battle. This way of fighting involved groups of foot soldiers. They had weapons for throwing, like crossbows, and weapons for close combat, like spears.

This tactic was incredibly successful. It helped soldiers defend themselves from all sides. It was especially good when fighting against strong cavalry.

A Tactic for Centuries

The "square tactics" were so effective that they were used for over 500 years! They were still used during the Napoleonic Wars in the early 1800s. French cavalry often attacked in large groups, but the squares held firm.

This tactic was also used in the Zulu War in the late 1800s. It helped soldiers defend against huge groups of Zulu warriors armed mostly with spears. The Battle of Atoleiros showed how smart planning could help a smaller army win against a much bigger one.

See also

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