No. Immune memory does not reside in the blood. Immune memory is in the bone marrow.
Therefore, revaccination is recommended if someone has a bone marrow or hematopoietic stem cell transplant because the person will lose their immunity. This is not the case with blood loss of any amount. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.