Nili

Nili was a Jewish espionage network which assisted the United Kingdom in its fight against the Ottoman Empire in Palestine between 1915-1917, during World War I.

The choice of siding with the British against the ruling power, the Ottomans, was eventually proven right by history, but in taking it the members of Nili went against the majority view of their fellow Jews from the Yishuv, who feared fierce persecution. These fears almost materialised when the spy ring was discovered, and the Jews of Palestine escaped the tragic fate of the Armenians only due to the intervention of the Vatican, the German government and General Erich von Falkenhayn, commander of the Ottoman-German troops in Palestine.

Nili (Hebrew: נִילִ"י‎) is an acronym of a phrase from the First Book of Samuel (1 Samuel 15:29, Hebrew: נצח ישראל לא ישקר, transliteration: Netzakh Yisrael Lo Yeshaker, translation: "The Eternity (God) of Israel will not lie").

Sarah Aaronsohn, her brothers Aaron and Alex, and their sister Rivka, together with their friend (and Rivka's fiance) Avshalom Feinberg formed and led Nili.

In 1915, even before the group commenced operations, the Turks imprisoned Feinberg on suspicion of spying, which was not true at the time. When Avshalom Feinberg was arrested for espionage and held in Beersheba, Yosef Lishansky joined Nili in December 1915. Because he was active in the south, he was recruited by Feinberg to pass information to and from Sarah Aaronsohn, who was operating from Atlit.

...
Wikipedia