Complex sentence: Like his ancestors He was the head of the Apex body of the Arain Clan called Anjuman-e-Arayan-e-Pakistan and besides serving the country and its people, served the cause of his tribe throughout his life.
Split into simpler sentences: Like his ancestors He was the head of the Apex body of the Arain Clan called Anjuman-e-Arayan-e-Pakistan. Besides serving the country and its people, he had served the cause of his tribe throughout his life.