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Continue to ChatMilitary Intelligence, Observation: Basic Field Manual FM30-10 https://www.whiterainbookhouse.com/products/military-intelligence-observation-united-states-war-department-9781163179567
Military Intelligence, Observation: Basic Field Manual FM30-10 https://www.whiterainbookhouse.com/products/military-intelligence-observation-united-states-war-department-9781163179567