Jahanbani was born on 16 April 1928 into a family with a long military history. His father, Amanullah Jahanbani, was a lieutenant general, who served in the Persian Cossack Brigade with Reza Shah Pahlavi.
Born on April 16, 1928, Jahanbani was part of a family with a long military history. His father, Amanullah Jahanbani, served as a lieutenant general and was stationed in the Persian Cossack Brigade under Reza Shah Pahlavi.