When you say "it", I'm assuming you're talking about the "Code of Conduct" (which is now officially known as the Code of the US Fighting Forces). Yes, that does have to do almost exclusively with obligations of US service members who are serving in theaters of combat, or have become captured by enemy forces. It describes how they should behave, and what information they are allowed to provide their captors. It is military law, administratively established by Executive Order issued by the President.
"The UCMJ is the Uniform Code of Military Justice -the Bluebook as I was taught in the US Navy. It applies to ALL military and is not limited as you suggest to for instance "theater of combat"..."
Right. I didn't say the UCMJ only applied to "the theater of combat". You should reread what I wrote. I was speaking specifically about the "Code of Conduct". The "Code of Conduct" and the UCMJ are entirely separate - one is administrative law established by Executive Order, and the other is statutory law.
"Homosexual sex has ALWAYS been illegal per military law... "
Yes, open homosexuality has been prohibited since the founding of the country, and has been military law. BUT, it was not part of the UCMJ until 1992. Prior to then, it was addressed only is directives established by the President, SecDef and/or service Secretaries & command. Still law, but not statutory law.
"Anyway, one can find at the following link, and many other places, the lawful UCMJ change process: "
Thank you for the link. Perhaps it will add to what I learned practicing military law as a Navy JAG for 25-years of my adult life.
You are quite welcome.