But now inquiry is being made concerning these issues. First, can any believer enlist in the military? Second, can any soldier, even those of the rank and file or lesser grades who neither engage in pagan sacrifices nor capital punishment, be admitted into the church? No on both counts.
TertullianPrevention of birth is premature murder, and it makes no difference whether it is a life already born that one snatches away or a life that is coming to birth.
Tertullian