During the First World War, he lived in Alexandria, Egypt, where he volunteered under the influence of Joseph Trumpeldor to the detachment regiment organized in the framework of the British army. The battalion went out to fight on the front of Gallipoli and there, on 4 Sivan, May 17, 1915, Zvi was killed while carrying out his duties, and his memory was immortalized in the “Book of Recognition for British Jewry.”