(2)Save in the case of a prisoner of war who is still absent, whenever any inquiry affects the character or service reputation of a person subject to the Act, full opportunity must be afforded to such person of being present throughout the inquiry and of making any statements and of giving any evidence he may wish to make or give, and of cross-examining and witness whose evidence, in his opinion, affects his character or service reputation, and producing any witnesses in defence of his character or service reputation.