O NEGATIVE
                Hi Don,This is an account of a group of us that got   "volunteered" for a mercy mission.  It seems to meet all the criteria.  Please   edit if you need to to bring it up to your standards.  Bob 
                “Vitray.”
                “What’s up Sarge?”
                “Doc called -- your record says you got type O negative   blood.  That true?
                “O neg?  I think so.”   I made a show of checking my dog tags as if I needed to make sure.  I was trying to figure out what was going   on. Why did Doc care what my blood type   was?
                 Doc was what we called the sergeant   and staff sergeant that the 823rd Red Horse Squadron had assigned as   medics. As an independent squadron the   823rd had its own cooks, carpenters, mechanics, heavy equipment operators, water   and wastewater processors and bug sprayers. That was my job. I was an engineer entomology specialist sometimes known   as Otto the Orkin man of the Air Force. I spent very little time actually spraying bugs, though.  Usually I was either out on the perimeter as   an Air Police Augmentee or working with Vietnamese crews building shelters and   revetments to protect our planes from rockets and mortars. The Red Horse mission required that we build   a base capable of operating a tactical squadron and then provide support and   services to that squadron while we enlarged and improved the base. Of Course Biên Hòa was already built when we got   there so we engaged in heavy construction that the base civil engineering   squadron wasn't equipped to handle. And why in the devil were they   asking about my blood type? 
                “Yeah, Sarge.” I answered in a deliberate   drawl fingering my tag, “It says here that I am indeed type O Negative.”
                “Wait here. When the bus comes you get on and do what   they tell you.”
                 I was mystified.  Because of my blood type I was being told   (ordered) to get on a bus.
                “Is this an   augmentee job?” I had been spending a   fair amount of time working on the perimeter at night as a sentry or on our RED   HORSE quick reaction force, though I couldn’t figure out what my blood type had   to do with anything unless the worst happened and I got shot.
                “Nope, some folks downtown need some   help and you volunteered.”
                “Should I check out my weapon?”
                “Naw, it ain’t that kind of a   deal.  They’ll explain it when you get on   the bus.”
                 Since I had no choice I did as I was   told and eventually the old blue school bus drove up and I and a few other pink-ponies clambered aboard. Apparently Red   Horse was the last stop.  The bus already   had a bunch of troops on it from other squadrons. We were all mystified.  The bus drove to the Main gate and after the   driver dealt with the guards we went through. I had never been to “downtown” Biên Hòa before. I had not availed myself of the opportunity   to take a pass during the three months I was there before the town was declared   “off limits” during Tet ’68. I could get   all the booze I wanted on base and the prostitutes in town lost whatever allure   they might have had after our medics explained that the VD rate was about 115%   (some of the ladies of leisure had more than one kind of disease) and that one   of the strains of gonorrhea was so virulent that one might be consigned to   Johnson Island for many months until a cure was effected.  I didn’t know if this was true, but it was   enough to knock the romance out of me while I was there.
                 I don’t remember much of the   town. I have an impression of dusty red   dirt tracks and low slung shacks.   Eventually the bus pulled into a little compound that was only slightly   more substantial than the slummy structures that surrounded it. The driver shouted “everybody out” and we all   clambered to the dusty little courtyard/parking lot.
                Then a tall guy accompanied by a rather   attractive blonde woman approached us from the building to our left. “Good day, men.” He said with a strange accent. I noticed that   his fatigues had strange little rank insignia on them and realized that he was   an officer from down under.“Welcome to the Biên Hòa Australian   Medical Mission, men. We need your   help. To be specific we need your   blood. I’ve got a woman here who just   gave birth and we can’t stop the bleeding. Your records indicate that you are universal donors and that you have all   given blood previously. Is that so?”
                 We nodded our assent.
                “Does anyone object to helping us   out on this?”
                 I think it was the presence of the   Nurse that did the trick on this one. I   can’t remember her well enough to say how she would have stacked up in civilian   life, but we were as deprived as the   sailors in Rodgers and Hammerstein’s South Pacific. What was a little blood compared to a chance   to act studly while performing a good deed in front of a blonde, round-eyed,   “female, feminine, dame?”
                 In any event, nobody objected. We were led inside and sat around a small   ward while the deed was done and the life giving fluid was taken. Like many things in war the finish was   anti-climactic. A surgeon did come out   and tell us while the last few guys were finishing up their donation that they   still hadn’t managed to stop the bleeding. To this day I do not know if either the mother or the baby survived that   day or the difficult years that followed. I like to imagine that we succeeded in our mission of mercy and that both   are alive and happy to this day.
                 After a couple of hours we climbed   back aboard the bus and returned whence we came. I got the rest of the day off and went and   had a burger, fries and coke at the BX snack bar and that was it. A few nights later I was out on the perimeter   manning an M-60 ready to shoot anyone who tried to get through my position. Giving blood and taking blood --  it was a   strange little war.