A group of persons inside the battle lines of a territory engaged in a conflict, who secretly sympathize with the enemy, and who engage in espionage or sabotage; sometimes also referred to as a trojan horse.
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"Fifth column" Quotes from Famous Books ![]() ![]() — Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield ![]() ![]() — A Wanderer in Venice • E.V. Lucas |
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