My recollection is that Plasma Donors are a special category at the Red Cross, requiring a special screening process and an extra long visit. It takes special dedication to be a plasma donor. Not sure if there are any guarantees that DoD will ever see your plasma in any case, since Red Cross sells to many buyers. Might be worth checking on.
You may want to call before to find out about being a plasma donor.
Wish I could “assign” my blood to DoD, but I doubt I can.
I am AB and wouldn’t mind helping out, but I refuse to donate anything to the Red Cross. As even you indicated, it’s likely what I do won’t go to the cause for which I donated...exactly why I will never do anything with the Red Cross.
Do you (or anyone) know if some other entity exists besides the Red Cross for this purpose?