English invasion of Scotland (1400) English invasion of Scotland (1400) The English invasion of Scotland of August 1400 was the first military campaign undertaken by Henry IV of England after deposing the previous king, his cousin Richard II. Henry IV urgently wanted to defend the Anglo-Scottish border, and to overcome his predecessor's legacy of failed military campaigns. A large army was assembled slowly and marched into Scotland. Not only was no pitched battle ever attempted, but the king did not try and besiege Scotland's capital, Edinburgh. Henry's army left at the end of the summer after only a brief stay, mostly camped near Leith (near
Stirling Castle English commanders William FitzWarin and Marmaduke Thweng retreated into the castle. However, they were quickly starved into surrender by the Scots. Next summer, the castle changed hands again, being abandoned by the Scots after the English victory at Falkirk. Edward strengthened the castle, but it was besieged in 1299 by forces including Robert Bruce. King Edward failed to relieve the garrison, who were forced to surrender. By 1303, the English again held the upper hand, and Stirling was the last remaining castle in Scottish hands. Edward's army arrived in April 1304, with at least 17 siege engines. The Scots, under