It could mean a monthly report on the military draft, such as
40,000 men a month being inducted for military service in '68.
A "draft" can also mean a "report"; such as, "...have the draft
on my desk in the morning." A "draft" (rough draft) is like a
practice report, a report that's still alittle messy and not
sounding right for submission or publication; it still needs some
work done on it. But, the draft tells the reader the meat of the
subject matter, enough so, that he can begin correcting any errors,
before final submission.