On November 4, 1918, Wilfred Owen (b. March 18, 1893) was killed in action. Owen wrote some of the best poetry on World War I, with imagery that unflinchingly details the terrors of trenches and gas warfare. Imbued with confidence from mentor Siegfried Sassoon, much of his poetry also refuses to shy away from his feelings as a gay man. A mere five of his poems were published during his lifetime. When Owen died one week before the Armistice, he was only 25 years old.