The Walking Blood Supply
This is precisely why permitting homosexuals in the military is such a danger. They are far more likely, with their mega-multiple partners per year, to be carriers of various blood-borne diseases....all the way up to HIV/AIDS.
When blood is needed on the battlefield, the military turns to its own troops.
Even if homosexuals refused to offer blood, then morale would be undermined by the idea that "My blood can save you, but if I take yours, it could kill me."
Likewise, in first aid on the battlefield, if I help you I risk contact with your blood, AND if you help me, I risk contact with your blood. Morale is undercut at a crucial time in the life-saving system.
Look, I've got a few good reasons why the military should not have allowed gays to join or remain in. Basically, it hurts morale because tha majority of the people who join the military disaprove of that choice of lifestyle.
But, as far as multiple partners, etc, what about the reality that some soldiers, sailors and marines visit prostitutes, even when in countries with high HIV infection rates. Do you want to go out and find (and then discharge) serviceman who visited a prostitute outside of Western Europe or the U.S. because there is a chance they were exposed to HIV, or have demonstrated a propensity for a behavior that greatly increases their risk of getting AIDS?