In December 1914, not long after the outbreak of World War I (1914-1918), the allied forces of French and English armies fought against German armies day after day in a region in northern France that was occupied by German armies. One night, after fighting in the trenches less than 100 meters away from each other, the soldiers in both camps were preparing for the next day’s fight. Just then, they heard a fine tenor voice singing “Stille Nacht, Heilige Nacht” from the German camp. As the tired soldiers listened to this familiar song, a soldier began to play the tune with a harmonica. There was a short silence after the first verse, and then a Scottish soldier in the English camp played the second verse with a bagpipe. Against the backdrop of the beautiful melody in the winter cold night, the English soldiers began to sing “Silent Night, Holy Night,” and then the French soldiers joined in with their chorus of “Douce Nuit, Sainte Nuit…” In that moment, the English, French, and German soldiers, though they spoke in different languages and were of different nationalities, sang together with peace and in one mind.