Leavis had won a scholarship from the Perse School to Emmanuel College, Cambridge to study history. Britain declared war on Germany soon after he matriculated, when he was 19. Leavis left Cambridge after his first year as an undergraduate and joined the Friends' Ambulance Unit (FAU) at York in 1915. After the introduction of conscription in 1916, when his brother Ralph also joined the FAU, he benefited from the blanket recognition of the members of the Friends' Ambulance Unit as conscientious objectors. Leavis is quoted as saying: "But after the Bloody Somme there could be no question for anyone who knew what modern war was like of joining the army."