Edward III himself came north to command his army, and laid siege to Berwick-upon-Tweed. However, a temporary truce was declared with the stipulation that if not relieved within a set time, Sir Alexander Seton, the governor, would deliver the castle to the English. Douglas raised an army to relieve the beleaguered defenders of Berwick. As a feint to draw the English away he invaded Northumberland, but was forced to return to Berwick when the English refused to be lured. On 19 July, Edward's army took positions at the summit of Halidon Hill, a summit some mile and a half north of the town with commanding views of the surrounding country. Douglas' numerically superior force was compelled to attack up the slope and were slaughtered by the English archers, a prelude, perhaps, to the battles of Crécy and Agincourt. The English won the field with little loss of life, however by the close of the fight, countless Scots common soldiery, five Scots Earls and the Guardian Douglas lay dead. The following day Berwick capitulated.