If you read all of the regulations in artbrooks link, there are at least two or three points that I would consider absurd.
1. Supposedly it could be found that a soldier has engaged in a homosexual act, but he might not be discharged if it is determined that he has no propensity to engage in homosexual acts.

2. He might admit that he is a homosexual, but that is acceptable so long as he has no propensity to engage in homosexual acts.

3. There is no justification for discharging him if he has engaged in homosexual acts, but it is determined that he did so because he wanted to get out of the service.

Give me a break.