English poet and novelist, known for his antiwar poetry and for his fictionalized autobiographies, praised for their evocation of English country life.

Sassoon enlisted in World War I and was twice wounded seriously while serving as an officer in France. It was his antiwar poetry, such as The Old Huntsman (1917) and Counterattack (1918), and his public affirmation of pacifism, after he had won the Military Cross and was still in the army, that made him widely known. His antiwar protests were at first attributed to shell shock, and he was confined for a time in a sanatorium, where he met and influenced another pacifist soldier-poet, Wilfred Owen, whose works he published after Owen was killed at the front. His autobiographical works include The Memoirs of George Sherston, 3 vol. (1928–36), and Siegfried's Journey, 3 vol. (1945), and more of his poems were published as Collected Poems (1947) and The Path to Peace (1960). His later poetry was increasingly devotional.