Complex sentence: His younger son, Major General Nara Bahadur Burathoki, who was the first Magar Major General of Nepalese Army after the fall of the Rana dynasty, retired from the Nepal Army after a long distinguished service.
Split into simpler sentences: His younger son, Major General Nara Bahadur Burathoki, who was the first Magar Major General of Nepalese Army after the fall of the Rana dynasty. He retired from the Nepal Army after a long distinguished service.