Known to friends as "Bungo", Byng was born to a noble family at Wrotham Park in Hertfordshire, England and educated at Eton College, along with his brothers. Upon graduation, he received a commission as a militia officer and saw service in Egypt and Sudan before enrolling in the Staff College at Camberley. There, he befriended individuals who would be his contemporaries when he attained senior rank in France. Following distinguished service during the First World War—specifically, with the British Expeditionary Force in France, in the Battle of Gallipoli, as commander of the Canadian Corps at Vimy Ridge, and as commander of the British Third Army—Byng was elevated to the peerage in 1919. In 1921, King George V, on the recommendation of Prime Minister David Lloyd George, appointed him to replace the Duke of Devonshire as Canada's governor general, a post he occupied until the Viscount Willingdon succeeded him in 1926. Byng proved to be popular with Canadians due to his war leadership, though his stepping directly into political affairs became the catalyst for widespread changes to the role of the Crown in all of the British Dominions.