Battle of Bannockburn for the night. Sir Alexander Seton, a Scottish noble serving in Edward's army, defected to the Scottish side and informed them of the English camp's position and low morale. Robert Bruce decided to launch a full-scale attack on the English forces and to use his schiltrons again as offensive units, a strategy his predecessor William Wallace had not done. The English army was defeated in a pitched battle which resulted in the death of several prominent commanders, including the Earl of Gloucester and Sir Robert Clifford, and capture of many others. The victory against the English at Bannockburn is the
Robert the Bruce the heavy fighting. The historian Roy Haines describes the defeat as a "calamity of stunning proportions" for the English, whose losses were huge. In the aftermath of the defeat, Edward retreated to Dunbar, then travelled by ship to Berwick, and then back to York; in his absence, Stirling Castle quickly fell. Freed from English threats, Scotland's armies could now invade northern England. Bruce also drove back a subsequent English expedition north of the border and launched raids into Yorkshire and Lancashire. Buoyed by his military successes, Bruce's forces also invaded Ireland in 1315, in an attempt to free the country