Complex sentence: Several times he goes over Blake's head to complain about events at the camp; one example of this is when Pierce was appointed Chief Surgeon over him; he then appealed directly to General Barker (Sorrell Booke).
Split into simpler sentences: Several times he goes over Blake's head to complain about events at the camp. One example of this is when Pierce was appointed Chief Surgeon over him; he then appealed directly to General Barker (Sorrell Booke).