Dhameystir weedha soo socota: Ka qayb galka Britain ee Dagaalkii Jasiiradda wuxuu bilow u ahaa olole dheer oo Yurub ah si loo kordhiyo awoodda militariga ee Ingiriiska ee dhulka iyo in laga xoreeyo Jasiiradda Iberia Faransiiska. Bishii Agoosto 1808, 15,000 oo ciidamo British ah - oo ay ku jiraan King's German Legion - ayaa ka degay Portugal iyaga oo ka amar qaatay Taliye Guud Sir Arthur Wellesley, kaasoo dib u riixay Henri François Delaborde oo ka koobnaa 4,000 oo askari.
Roliça 17kii Ogosto waxayna ku jabiyeen Junot ciidankiisii ugu weynaa ee 14,000 oo nin ah Vimeiro. Wellesley waxaa markii hore badalay Sir Harry Burrard ka dibna Sir Hew Dalrymple. Dalrymple wuxuu siiyay Junot daadgureyn aan kala go 'lahayn oo ka socota Portugal oo ay sameysay Royal Navy heshiiskii muranka dhaliyay ee Sintra bishii Ogosto. Bilowgii Oktoobar 1808, ka dib fadeexaddii ka dhacday Britain ee ku saabsan Heshiiskii Sintra iyo dib u soo celinta jeneraalada Dalrymple, Burrard, iyo Wellesley, Sir John Moore wuxuu la wareegay hoggaanka 30,000 oo nin oo British ah oo ku sugnaa Portugal. Intaa waxaa sii dheer, Sir David Baird, oo ka amar qaatay safar xoojin ah oo ka yimid Falmouth oo ka kooban 150 gaadiid oo wata 12,000 ilaa 13,000 oo nin, oo ay wateen HMS "Louie", HMS "Amelia" iyo HMS "Champion", ayaa galay Corunna Harbour 13kii Oktoobar. Dhibaatooyinka saadka iyo maamulka ayaa ka hortagay weerar kasta oo degdeg ah oo Ingiriis ah.