Royal Scots Navy of the Flemings from England in 1303, he gained the support of a major naval power in the North Sea. The development of naval power allowed Robert to successfully defeat English attempts to capture him in the Highlands and Islands and to blockade major English controlled fortresses at Perth and Stirling, the last forcing King Edward II to attempt the relief that resulted at English defeat at Bannockburn in 1314. Scottish naval forces allowed invasions of the Isle of Man in 1313 and 1317 and Ireland in 1315. They were also crucial in the blockade of Berwick, which led to
Robert the Bruce only be temporary. Although the Bruces were by now back in possession of Annandale and Carrick, in August 1296 Robert Bruce, Lord of Annandale, and his son, Robert Bruce, Earl of Carrick and future king, were among the more than 1,500 Scots at Berwick who swore an oath of fealty to King Edward I of England. When the Scottish revolt against Edward I broke out in July 1297, James Stewart, 5th High Steward of Scotland, led into rebellion a group of disaffected Scots, including Robert Wishart, Bishop of Glasgow, MacDuff, the son of the earl of Fife, and the young