Complex sentence: In 1978 about a year after Gen Tikka Khan and Mr. Ghulam Ishaq Khan left the Ministry of Defense, Nawab was superseded, but given a three year extension to continue his work at POF.
Split into simpler sentences: In 1978 about a year after Gen Tikka Khan and Mr. Ghulam Ishaq Khan left the Ministry of Defense, Nawab was superseded. Although, Nawab was given a three year extension to continue his work at POF.