"Armies of the Night" is a non-fiction novel by Norman Mailer, published in 1968. It blends history and literature, recounting the events surrounding the 1967 anti-Vietnam War march on the Pentagon. The book explores the intersection of politics, culture, and personal experience during a turbulent time in American history. The narrative is unique as it combines Mailer's personal reflections with a broader commentary on the protest movement. It captures the atmosphere of the era, highlighting the tensions between different factions within the anti-war movement and the societal impact of the Vietnam War on American life.