No, he does not. He signs. He has all his rights, but like any other professional he's also subject to additional obligations. As a lawyer, I don't give up my rights because I become a lawyer. In addition to all my rights and obligations, I have certain rules that the law society imposes upon me. One of these is to keep confidential conversations and facts that I have from my clients. That's fine. That doesn't abridge my rights. It just gives me additional obligations. And it's the same for a soldier.
On February 28th, 2011. See this statement in context.