In Euromerica it was D Day. In Asia v Euromerica it was Islands, then Hiroshima/Nagaski. In Asia v Asia it was something else.

Wherever it was, it was high drama and the depths of Hell.

That's the front of the postcard. The back of the postcard is a 2D barcode.

It can be read by a scanner pen connected to a flat screen in the classroom. Or a smart phone. The kid watches it in class, then watches it on the way home. In the living room, the remote has been replaced by a smart phone or scanner pen connected to the TV. Then it can be shared with the family after dinner.

Click and watch the video. 10:43