There is a national cemetery nearby for veterans and their wives. Is this appropriate for Catholics? I know Catholic cemeteries are blessed ground, but what about a national cemetery?
Canon 1180, #2, states, "All may, however, choose their cemetery of burial unless prohibited by law from doing so."
That does not exclude a national cemetery. I can't imagine any law that would prohibit you from choosing your cemetery.
When burial does take place in a non-Catholic cemetery, however, a priest should conduct the final committal ceremony at the grave site and bless the grave.