Complex sentence: After that he became Commander-in-Chief, Plymouth in November 1875, was promoted to Admiral of the Fleet on 15 July 1879 and advanced to Knight Grand Cross of the Order of the Bath on 23 April 1880.
Split into simpler sentences: After that he became Commander-in-Chief, Plymouth in November 1875 and was promoted to Admiral of the Fleet on 15 July 1879. He was advanced to Knight Grand Cross of the Order of the Bath on 23 April 1880.