The celebrated British poet, editor, critic, novelist, and diarist Siegfried Sassoon (1886-1967) enlisted for military service on the first day of World War I; his friends in the service included Robert Graves and Wilfred Owen. Sassoon's war poems were originally published in The Old Huntsman (1917) and Counter-Attack (1918). After the war, he went on to write several other books of poetry and criticism, as well as six volumes of prose autobiography.