Estonian military Aircraft Insignia Type 2. Used on wings.
<a href="//commons.wikimedia.org/wiki/User:Kwasura" title="User:Kwasura">Kwasura</a>
2014-01-01
<span class="int-own-work" lang="en">Own work</span> <a rel="nofollow" class="external text" href="http://labor.kodulehe-tegemine.ee/lennusadam/mm23/images/stories/mm23/lennu_1s.jpg">based on</a>