En la batalla de Fuentes de Oñoro (3–5 de mayo de 1811), el ejército Británico-Portugués del Duque de Wellington evitó un intento del ejército francés del Mariscal André Masséna para disminuir la presión del sitio de la ciudad de Almeida.
Referencias
Brialmont, Alexis Henri: History of the life of Arthur, duke of Wellington, Volume 1, London: Longman, Brown, Green, Longmans, & Roberts, 1858
Currie, Laurence: The bâton in the knapsack: new light on Napoleon and his marshals, J. Murray, 1934
Maxwell, (Sir) Herbert: The life of Wellington: The restoration of the martial power of Great Britain, Volumen 1, S. Low, Marston, 1900
Chartrand, René: Fuentes de Oñoro – Wellington's liberation of Portugal, Osprey, Oxford, 2002, ISBN 1-84176-311-X
Fletcher, Ian: Wellington's Regiments: The Men and Their Battles, 1808–15, The History Press Ltd., ISBN 1-873376-06-5
Gates, David: The Spanish Ulcer: A History of the Peninsular War, Da Capo Press 2001, ISBN 0-306-81083-2
Glover, Michael: The Peninsular War 1807–1814, London: Penguin, 2001, ISBN 0-14-139041-7
Longford, Elizabeth: Wellington: The Years of the Sword, Harper & Row, 1969
Oman, (Sir) Charles: A History of the Peninsular War, Vol. 4, Greenhill Books London 1996 ISBN 1-85367-618-7
Paget, Julian: Wellington‘s Peninsular War – Battles and Battlefields, London, 1996, ISBN 0-85052-603-5