In the south-west, Royalist commander Sir Ralph Hopton secured Cornwall with victory at Braddock Down in January. In June, he advanced into Wiltshire, inflicting a serious defeat on Waller's 'Army of the Southern Association' at Roundway Down on 13 July. Arguably the most comprehensive Royalist victory of the war, it isolated Parliament's garrisons in the west and Prince Rupert stormed Bristol on 26 July. This gave the Royalists control of the second largest city in Britain and landing point for reinforcements from Ireland.