Who is Charles Manning from The Eye in the Door and what is their importance?

Manning is also an officer in the British army. Unlike Billy Prior, however, Manning is decidedly upper-crust; a fact which shows in his demeanor. Charles Manning is injured badly in the war. Manning suffers from severe shell-shock, and for a time he is under the care of Dr. Rivers. Manning is married and has two sons. He treasures his children and views his wife, Jane, as a very special woman.