Mezue ahịrịokwu na-esonụ: Ntinye aka Britain na Agha Peninsular bụ mmalite nke mkpọsa were ogologo oge na Europe iji mee ka ike ndị agha Britain dịkwuo elu n'ala na ịtọhapụ Iberian peninsula n'aka ndị France. N'ọnwa Ọgọstụ nke afọ 1808, ndị agha Briten dị puku iri na ise - gụnyere ndị agha German nke Eze - rutere Portugal n'okpuru ọchịagha Sir Arthur Wellesley, onye chụghachiri ndị agha Henri François Delaborde dị puku mmadụ anọ na Portugal.
Roliça na 17 Ọgọstụ ma kụrie isi ike nke Junot nke mmadụ 14,000 na Vimeiro. Sir Harry Burrard na Sir Hew Dalrymple nọchiri Wellesley na mbụ. Dalrymple nyere Junot nnwere onwe na-enweghị nsogbu site na Portugal site na Royal Navy na Mgbakọ Sintra na-ese okwu na August. Ná mmalite October 1808, mgbe ọgba aghara e nwere na Britain n'ihi Mgbakọ Sintra na ịkpọghachi ndị ọchịagha Dalrymple, Burrard, na Wellesley n'ọrụ, Sir John Moore ghọrọ onyeisi ndị agha Britain dị puku mmadụ iri atọ na Portugal. Tụkwasị na nke ahụ, Sir David Baird, na-eduzi njem nke ndị nkwado si Falmouth nke gụnyere ụgbọ njem 150 na-ebu n'agbata ndị ikom 12,000 na 13,000, ndị HMS "Louie", HMS "Amelia" na HMS "Champion", batara na ọdụ ụgbọ mmiri Corunna na 13 Ọktọba. Nsogbu ndị e nwere n'ihe ndị e ji arụ ọrụ nakwa n'ịchịkwa ọrụ gbochiri ndị Briten ịwakpo ha n'egbughị oge.