The Death card was left by the Beltway sniper at one of the crime scenes with the message "Dear Policeman, I am God. Do not tell the media about this."
There need to be some Disambiguating here differentiating the Ace of Spades as the Death Card vs. the Tarot Death Card. Some history of the Ace of Spades as the Death Card would be helpful as well.
The Ace of Spades was used during the Vietnam War. Allied soldiers used the Ace Of Spades to spread fear among the North Vietnamese and Viet Cong.