"Gallipoli, 18 March 1915" (published in magazine Schwerpunkt issue #1), is an extension for 3W wargame "Salvo II", and simulates the Allied naval assault on the Turkish forts at the mouth of the Dardanelles. To be played this extension require some ships counters from Salvo II, and adds for the Entente Allies 4 French and 9 British pre-dreadnoughts. For the Central Powers add rules about shore batteries and mobile minefields. The victory conditions are for the Entente Allies exit 4 ships across "The Narrows", and for the Central Powers avoid this.