The memorial located on the left side of the entrance to the Sedd el Bahr Castle was erected in memory of the first Turkish martyrs. Despite the non-existence of a de facto and official declaration of war on the Ottoman State, on November 3, 1914 British and French battleships bombarded the bastions protecting the entrance to the strait. During the bombardment, gunpowder and artillery shells exploded as the battery inside the Sedd el Bahr Castle were hit. As a result of the explosion, 5 officers and 81 privates were martyred.

The following are inscribed on the memorial: The British and French Navy bombarded Sedd el Bahr and Kumkale on November 3, 1914, and 5 officers and 81 privates thus were martyred. This is an important incident for the declaration of war by Allies on the Ottoman Empire; assuring confidence for the planned Dardanelles Campaign; fortification of the Dardanelles Strait by the Ottomans; falling of the first Ottoman martyrs; playing a pioneering role for the Battles of the Dardanelles. May the souls of the blessed martyrs rest in peace.… Dardanelles could not be trespassed; nor shall it be in the future……

18 March 1986. The Memorial was restored by the Ministry of Forestry and Water Affairs in 2013. The soldiers who were martyred during the assault were actually interred at the Sedd el Bahr Ammunition Dump Martyrs’ Cemetery, which is located on the right side of the road down to the port and adjacent to the wall of the castle.