Near starvation , the Spaniards tried to conquer Oporto quickly .
Near starvation , the Spaniards were defeated in the battle of the Douro and at Montalegre before retreating to Spain .
Near starvation , the Spaniards tried to conquer Oporto quickly , but were defeated in the battle of the Douro and at Montalegre before retreating to Spain .