Keywords: World War I US Army Air Service Recruiting Poster Source3.jpg World War I US Army Air Service Recruiting Poster USAF Transferred from http //en wikipedia org en wikipedia to Commons by User Sfan00_IMG using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper PD-USGov Original upload log en wikipedia Poster-aas3 jpg 2006-03-10 23 08 Bwmoll3 271×375× 42084 bytes <nowiki>World War I US Army Air Service Recruiting Poster Source USAF</nowiki> World War I recruitment posters from the United States World War I aviation posters Air Service United States Army posters |