For a bit of background for those who don't know and would like to apply TLDR:
For awhile now, the US Military has had a policy concerning homosexuals which basically forces them to keep their sexual orientation secret. Anyone who spills the beans is severely punished, especially if the information was pried out by someone else. This was done to combat the hazing that would be involved due to such knowledge being in the open. The argument against it now is that homosexual soldiers can't serve with pride because they aren't allowed to be themselves.
I'm pretty sure you'll see a big spike in hazing, and possibly severe injuries or deaths, after this is fully enacted. My main point against this, however, is that the military isn't supposed to be a platform for individual expression. Certain branches force more homogeneity than others - the Marines for example are still very traditional and have a lot of conformity; it's where most of their pride comes from. It's also why the Marines have several generations of service from the same families. Call it nationalism if you want, that's not what I want to point out.
Part of the change on the table is how, if at all, homosexual soldiers will be allowed to express themselves. This is crazy because self expression is already very restricted in the military. There are good reasons for this, especially in boot camp where the individual's will has to be 'broken' in order to build the soldier on top of it. One of the most important things a soldier needs to learn is that his buddies are the most important things he has. That's a much easier lesson when everyone's the same.