I, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share...
Roundel of the United States Army Air Corps used from 1926 to 1941. When the Air Corps name was changed to the United States Army Air Force which retained...
DescriptionFin flash of the USA 1917-1918.svg English: http://www.history.navy.mil/faqs/faq2-1.htm Date 2010 Source Own work Author Kwasura Permission...
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