Aircraft recognition is a visual skill taught to military personnel and civilian auxiliaries since the introduction of military aircraft in World War I. It is important for air defense and military intelligence gathering.
Aircraft recognition generally depends on learning the external appearance of the aircraft, both friendly and hostile, most likely to be encountered. Techniques used to teach this information have included scale models, printed silhouette charts, slide projectors, computer aided instruction and even specially-printed playing cards.
Read more about Aircraft Recognition: Early Development of Skills, Aircraft Recognition in The United States
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“No democracy can long survive which does not accept as fundamental to its very existence the recognition of the rights of minorities.”
—Franklin D. Roosevelt (1882–1945)