What authorities are you talking about? What makes you think they are random? Who/what are they disagreeing with? I don't think I quite understand what you are saying. You are ultimately the arbiter of your own code of ethics. Nobody can take away the beliefs you hold inside your head. But you should understand that when you join the military, legally, you are defering to another authority, if only for a while. It would be wise not to commit yourself to an organization which does not mirror your set of values. People in America are free to exercise their will. They don't have to be a part of an "illegal" war if they don't want to. They are also free to leave the country if they are strong in their convictions.
Neither the Taliban nor Al Qaeda is officially endorsed as the army of any real nation. Members have no legal obligation to serve. That's why they are not "official." It isn't arbitrary.
I'm not even trying to say that I'm justified and others are not. I thought we were talking about the moral implications of military service in America.
There are a number of legitimate reasons to continue to serve (and I don't really like that you call it an "excuse," Im not excusing or apologizing for anyone.) One of the most notable being there are no more American troops fighting in Iraq and the war is officially over. It also depends on what you do in the military. Special forces such as what MarineRecon is a part of do more to create peace and prosperity than most humanitarian organizations, sadly. Another person might feel compelled to protect his brothers in arms. He'll say, "as long as my countrymen are somwhere fighting and getting shot at, I want to be there with them to do my part and make sure they get home safe." That is a legitimate moral imperative in my opinion.
I should know better than to engage Laughing Man in a debate, but here goes nothin: "The policy has been legally challenged several times. However, federal courts have consistently found that military service members contractually agree that their term of service may be involuntarily extended until the end of their obligated service."
Stop-loss policy - Wikipedia, the free encyclopedia