In this old photo we see three Turkish soldiers posing for a studio photograph with their grisly trophies.  
It's not known who the two heads on the table might have once belonged to, but it's certain they won't be giving the Turks any more trouble. Beheading prisoners has such a medieval flavor to it. A sign of desperation? Very likely. After all, the Turks were soon after crushed by British and British-Indian troops and their shaky empire removed from them.  
After the war, Turkey was reduced to something like its present-day borders, and much of the erstwhile Ottoman empire put under the rule of either the British or the French who were to set about modernizing it – without terribly much success.