50th Aero Squadron emblem.  Approved by Hq, AEF 18 November 1918.
World War I squadron member as approved by Hq, American Expeditionary Force
1918-11-18
Modified from <a rel="nofollow" class="external free" href="https://www.google.com/search?q=50th+aero+squadron&amp;num=20&amp;rlz=1C1CHWA_enUS627US627&amp;espv=2&amp;source=lnms&amp;tbm=isch&amp;sa=X&amp;ved=0ahUKEwi08P240NvQAhWCw1QKHXgBDDUQ_AUICSgC&amp;biw=1600&amp;bih=770#imgrc=PxO-XhyZjJUQQM%3A">https://www.google.com/search?q=50th+aero+squadron&amp;num=20&amp;rlz=1C1CHWA_enUS627US627&amp;espv=2&amp;source=lnms&amp;tbm=isch&amp;sa=X&amp;ved=0ahUKEwi08P240NvQAhWCw1QKHXgBDDUQ_AUICSgC&amp;biw=1600&amp;bih=770#imgrc=PxO-XhyZjJUQQM%3A</a> using Microsoft Paint