Complex sentence: Witton serves three years of his sentence, but is released after a national outcry, and writes a book entitled "Scapegoats of the Empire", an account of the Breaker Morant affair.
Split into simpler sentences: Witton serves three years of his sentence, then is released after a national outcry. He writes a book entitled "Scapegoats of the Empire", an account of the Breaker Morant affair.