The Battle of Grijó (May 10, 1809 – May 11, 1809) was a battle that ended up in victory for the Anglo-Portuguese Army

Anglo-Portuguese Army

The Anglo-Portuguese Army was the combined British and Portuguese army that won the Peninsular War, under the command of Arthur Wellesley. The Army is also referred to as the British-Portuguese Army and, in Portuguese, as the Exército Anglo-Luso or the Exército Anglo-Português.The Anglo-Portuguese...

 commanded by Sir Arthur Wellesley

Arthur Wellesley, 1st Duke of Wellington

Field Marshal Arthur Wellesley, 1st Duke of Wellington, KG, GCB, GCH, PC, FRS , was an Irish-born British soldier and statesman, and one of the leading military and political figures of the 19th century...

 (the future 1st Duke of Wellington) over the French army commanded by Marshal Nicolas Soult

Nicolas Jean de Dieu Soult

Nicolas Jean-de-Dieu Soult, 1st Duke of Dalmatia , the Hand of Iron, was a French general and statesman, named Marshal of the Empire in 1804. He was one of only six officers in French history to receive the distinction of Marshal General of France...

 during the second French invasion of Portugal in the Peninsular War

Peninsular War

The Peninsular War was a war between France and the allied powers of Spain, the United Kingdom, and Portugal for control of the Iberian Peninsula during the Napoleonic Wars. The war began when French and Spanish armies crossed Spain and invaded Portugal in 1807. Then, in 1808, France turned on its...

. The next day, Wellesley drove Soult from Porto in the Second Battle of Porto.