Complex sentence: Not until 1958 would the last British chief of staff, that of the Indian Navy, be succeeded by an Indian; on 22 April of that year, Vice Admiral Ram Dass Katari became the first Indian Chief of Naval Staff.
Split into simpler sentences: Not until 1958 would the last British chief of staff that of the Indian Navy, be succeeded by an Indian. On 22 April of that year, Vice Admiral Ram Dass Katari became the first Indian Chief of Naval Staff.