I wished I could lay my hands on an Air Force manual on proper corresspondence procedures. I was a Navy clerk then and we had one that was followed exactly. I wished someone with Air Force clerical experience from that time would post here on Free Republic about whether these "documents" were actually done IAW the regulations of that time. Some have pointed out, an I think them correct, that an official order to report for a physical would not be given in the form of a Memorandum. In the Navy a Memo was only used for informal corresspondence.
After all of the discussion, it occurs to me that the Army did not use memoranda until the early 80s. Informal traffic was done on a pre printed Disposition Form AKA DF. Did the AF do the same?