During what war was there an unofficial cease-fire on Christmas Eve?

What many call a miracle occurred on Christmas Day 1914 during World War I. Soldiers on the Western Front declared an unofficial cease-fire to celebrate the holiday. They sang carols with one another, and many crossed No-Man's land to swap presents with the enemy on this day.

Asked by Kendra Whitmire · Last updated 5 years ago · 13.8K views · SOURCE