Ottoman Pilots in 1915 next to a  Blériot XI-2 monoplane. Ahmet Ali Çelikten can be seen next to the propeller.
Ottoman Military
<p><a rel="nofollow" class="external free" href="http://www.hho.edu.tr/muze/muze.htm">http://www.hho.edu.tr/muze/muze.htm</a>
</p>
<a rel="nofollow" class="external free" href="http://www.turkeyswar.com/aviation/aviation.html">http://www.turkeyswar.com/aviation/aviation.html</a>