13. Dark Humor

Designer: Colonel George S. Patton

U.S. Army Col. Patton sent a heartwarming greeting from the front lines in 1968, complete with a stomach-wrenching photo of a pile of dead, dismembered bodies Viet Cong soldiers. The inside read, "From Colonel and Mrs. George S. Patton III - Peace on Earth." Distasteful doesn't even begin to describe it.

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