Title: Unarmed and Unafraid
Author: Glenn B. Infield
Infield, Glenn B. (1970). Unarmed and Unafraid. New York: Macmillan
Date Updated: April 29, 2016
Owing to date of publication the book does not deal with modern satellite reconnaissance and remote sensing.
This is a review by the Defense Intelligence School.
Evolution of aerial reconnaissance since Civil War with discussion of pilots, engineers, aircraft and cameras. Historical examples include U-2, Cuban Missile Crisis, and Korea.
Reviewed by Paul W. Blackstock and Frank L. Schaf
A former pilot and major in the U.S. Air Force, the author traces the evolution of aerial reconnaissance from its beginnings in the Civil War to its sophisticated application in Southeast Asia and in Vietnam. Described in detail ere reconnaissance operations in both Europe and the Pacific during World War II, and in Korea. Of special interest are descriptions of the photographic and electronic reconnaissance and surveillance flights around the periphery of the Soviet Union.
 Defense Intelligence School (1981). Bibliography of Intelligence Literature: A Critical And Annotated Bibliography of Open-Source Literature (7th ed, rev.). Washington, DC: Defense Intelligence School, p. 34
 Blackstock, Paul W. (1978) and Frank L. Schaf, Jr. Intelligence, Espionage, Counterespionage, And Covert Operations: A Guide to Information Sources. Detroit: Gale Research Co., p. 109