Shaul was born on Hannukah 1918 in Lida Poland. He graduated from high school and was among the first to join Beitar in his town. In 1938 he joined Etzel cells emerging from Beitar Poland. In 1939 he made aliya with the ‘Af-Al-Pi’ Clandestine Immigration. In Eretz Yisrael he served in Beitar at Nachalat-Yitzhak, worked in a quarry and as a Jewish Policeman.
After Etzel split (1940), he joined Lehi and moved to the Old City Jerusalem. He was arrested in 1941, rearrested shortly afterwards, imprisoned at Mizra, later transferred to Latrun. The inmates elected him as their representative before the prison authorities. He had mastered English. He stood out in his dedication to learning and his deep aspiration to broaden his horizons. He loved Hebrew poetry. He was among the twenty Lehi prisoners who escaped from Latrun November 1,1943, through a 70-meter tunnel they had dug during nine months. Two days after escaping he was put in charge of the underground press which published the Lehi magazine ‘Hachazit’. When the Combat Brigade was established, he participated in a commanders course and later instructed in it. He participated in blowing up the Lod Railway Station, a major British target, on November 1, 1945 ( joint Etzel/Lehi job). Later he was put in charge of Haifa District. In 1945 he was arrested in Haifa and imprisoned. He was exiled to Africa with the eighth batch of prisoners. He arrived in Eritrea December 20, 1945 in a group of fifty-five exiles; all were dispersed to separate camps. Less than a month after arrival, on January 17,1946 Sudanese soldiers opened fire on camp prisoners killing Eliyahu Ezra. Shaul rushed to his friend’s rescue during this bloody attack, was shot and killed. Twelve prisoners were wounded.
On 1949 Shaul’s remains were brought to Israel, with those of Eliahu Ezra and Naftali Lubinchik who had died at a hospital in African exile. They were laid to rest in Jerusalem. Shaul’s entire family perished in the Holocaust. The sole survivors were his sister and her son, living in Israel.