This year, Sainsbury's did one in remembrance of the centenary of the First World War. This was a real event when there was an unofficial truce on parts of the Western Front during Christmas 1914.
It was the event that led to strict rules on fraternising with the enemy.
See also:
- http://www.history.com/topics/world-war-i/christmas-truce-of-1914
- www.christmastruce.co.uk
