Sandsbury did this ad linked below and made a commemorative chocolate bar in the same style it would have been packaged in 1914.
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https://www.youtube.com/watch?v=NWF2JBb1bvM&feature=youtu.be
This is based on the Christmas Truce of 1914 that actually occurred. The unoffical truce had such a profound effect that in subsequent years the "leadership" of both sides planned offensives or prolonged bombardments that made a repeat impossible.
: “Those who cannot remember the past are condemned to repeat it.” -George Santayana