To mark the 300th anniversary of the event in question, this thesis analyses the first British attempt to conquer the French colonial city of Quebec. The expedition was a product of the turbulent political environment that was evident towards the end of the reign of Queen Anne. Its failure has consequently proven to be detrimental to the reputations of the expedition’s commanders, in particular Rear-Admiral Sir Hovenden Walker who was actually a competent and effective naval officer. True blame should lie with his political master, Secretary of State Henry St John, who ensured the expedition’s failure by maintaining absolute control over it because of his obsession with keeping its objective a secret. After recently celebrating a succession of tercentenaries concerning the War of the Spanish Succession, this thesis hopes to draw attention away from the famous military commander, the Duke of Marlborough, and instead focus upon a little known combined operation. The expedition helped to alter British strategy by renewing an interest in ‘blue-water’ operations that would see huge success later in the century, ultimately resulting in the eventual conquest of French North America in the Seven Years War.