The following year, a British force commanded by Arthur Wellesley (future Duke of Wellington) disembarked in Galiza with the intent of supporting the Spanish, but later advanced on Porto and landed at Figueira da Foz on 1 August. The British-Portuguese forces advanced quickly on the French, defeating them at the Battle of Roliça (17 August) and later the Battle of Vimeiro (21 August). A two-day armistice was observed as negotiations proceeded and the belligerents formally signed the Convention of Sintra (30 August), without Portuguese representation. As part of the accord, the British transported the French troops to France, with the product of sacks made in Portugal. The Convention benefited both sides: Junot's armies, incapable of communicating with France, could make a safe withdrawal; and the Anglo-Portuguese forces gained control over Lisbon. The Portuguese populace was free to avenge itself on francophile compatriots for the brutality and depredations of the French.