Saydam became the vice-president of the Department of Health of the Ministry of War on 1 December 1913 and was promoted to the rank of major on 1 June 1915. Meanwhile, he established the Institute of Bacteriology and his vaccines against epidemics and especially typhus had been effective.
Saydam assumed a position as vice-president at the Department of Health in the Ministry of War on December 1, 1913, was promoted to major on June 1, 1915. Concurrently, he established the Institute of Bacteriology and his vaccines against widespread diseases, especially typhus, showed impressive results.