Complex sentence: Then, in 1976, Nawab was deputed to the Ministry of Defense after General Tikka retired from the Army and Mr. Ghulam Ishaq Khan was Secretary General Defense.
Split into simpler sentences: Then, in 1976, Nawab was deputed to the Ministry of Defense, after General Tikka retired from the Army. At that time, Mr. Ghulam Ishaq Khan was Secretary General Defense.