Seyit Onbaşı (Corporal Seyit) is one of the legendary figures of WWI. During the naval campaign on March 18,1915, Seyit was posted as a private at the Rumeli Mecidiye Tabyası (battery), a fortification on the European side of the Dardanelles, not far from the Kilitbahir Fortress. Apart from some smaller artillery, the battery also possessed six heavy caliber guns, handled by "Havranlı Koca Seyit" (Big Seyit from Havran, his birthplace) and his colleagues.
By noon on the 18th, nearly all the big guns had been knocked out by fire from the Allied warships. Seyit's gun was still able to fire, but the crane used to feed the big shells into the gun had been destroyed. In a supreme effort, he ran to the ammunition pile, took one of the huge shells weighing 215 okka (about 275 kilos [605 pounds])in his arms, and brought it single-handedly to the gun.