20th Engineer Brigade SSI from <a rel="nofollow" class="external autonumber" href="http://www.tioh.hqda.pentagon.mil/Eng/20th%20Engineer%20Brigade.htm">[1]</a>
<a href="//commons.wikimedia.org/wiki/User:McSush" title="User:McSush">McSush</a>
2010-05-23
<span class="int-own-work" lang="en">Own work</span>