1915 (26 July) registered cover (flap missing) from "Zion Mule Corps", S.Z. 1 Army Post Office cds (Gallipoli) addressed to Miss E. Rosoff (girlfriend) in Alexandria, endorsed "from Captain (Joseph) TRUMPELDOR Zion Mule Corps, Mediterranean Exped. Force Gallipoli" (the Zion Mule Corps was formed in 1915, considered to be the first all-Jewish military unit organized in close to two thousand years, and the ideological beginning of the Israel Defense Forces) .
