American author and historian whose World War I-themed work, The Guns of August, won the Pulitzer Prize. Her other award-winning books include A Distant Mirror and Stilwell and the American Experience in China, 1911–45.
She received her Bachelor of Arts degree from Radcliffe College in 1933. She later became a war correspondent for The Nation.
She twice won the Pulitzer Prize in the category of General Non-Fiction (in 1963 and 1972).
She married Lester R. Tuchman in 1939. She and Tuchman had three daughters.
She won her first Pulitzer Prize six years before Norman Mailer received the same honor.