Christmas Truce of 1914

http://www.christmastruce.co.uk/

http://www.mikesnow.org/

 

This certainly was not the case in 1914.

From Oh Holy Night:

"In 1914, all attempts to prevent any Christmas truce had failed.
Pope Benedict XV had proposed to the warring parties
that they should “cease the clang of arms while
Christendom celebrates the Feast of the World's Redemption.”

Christmas Wanes: Ending the Truces
50
Oh Holy Night
Germany provisionally accepted that proposal but
the rejection by the other ‘Christian’ countries ensured
the death of this peace initiative. The kingdoms
of this world had other ideas.