That's really none of my concern. I don't care one way or the other about DADT (except for the fact that I like the way it reduces the number of people in the military). The important point is that the question of whether or not there is a valid military reason is not mine to answer, and it's certainly not a judge's to answer. But if it does become an issue that the American taxpayers wish to settle legislatively, then the branch of government through which they need to enact that legislation is the legislative one, not the judicial one. If, for example, those taxpayers wish to demand via Congress that their money not be used to fund homosexuals in the military, that's their right, since it's their money. What they don't have a right to do is to delegate to their legislators the passing of laws that would spend their money in ways that violates someone's rights. But that's not relevant to this issue, since none of the options (DADT, the repeal of DADT, or even flat out banning of gays in the military) violate anyone's rights, except inasmuch as they violate the rights of taxpayers not to have to be coerced into funding the military, which is a violation that all options commit equally.
Firstly, to be frank I have to question your integrety in supporting open discrimination to "reduces the number of people in the military". Recruitment limitations would be a much better, and non-discriminatory, method.
Secondly, as I have noted, the Judicial Branch is there for We the People to petition our government over the redress of greviences. In this example to challenge unjust and discriminatory governmental policies.
Lastly, I would imagine that JAG representatives where present in defense of the DADT policy. If they could not convince the judge that there was indeed a valid reason for this discriminatory policy, guess what, there isn't any.
Equality and Civil Rights should never be left open to the democratic principle as the majority will always find ways to discriminate against the minority.
The concept of "protected classes" is diametrically opposed to constitutional principles.
I have heard this "argument" given many times before, Perhaps you will be the first to offer a valid argument instead of the empty rhetoric the phrase is.
People have been, and are, discriminated in housing, employment, education, and other areas of life purely because of race, religion, age, gender, and the other Protected Classes.
It never fails to amaze me how some will speak out against the concept, but then utilize it without hesitation should, say, they feel their religious freedoms are being impinged upon.