From Dreams of a Great Small Nation: The Mutinous Army that Threatened a Revolution, Destroyed an Empire, Founded a Republic, and Remade the Map of Europe, by Kevin J. McNamara (PublicAffairs, 2016), Kindle Loc. 1072-1101:
THE MOST CONTROVERSIAL defection of Czech soldiers from the Austro-Hungarian army to the Russians occurred when 1,850 of the 2,000 men in the unruly Czech Twenty-Eighth Infantry Regiment disappeared into the Russian lines near the Dukla Pass, a gateway through the Carpathian Mountains from Russia into Hungary (today, on the border between Poland and the Slovak Republic). The mass desertion followed informal contacts between Czech soldiers on both sides in early April 1915….
On April 3 (OS), Cossacks and Russians prepared to attack the Twenty-Eighth under cover of darkness. But members of the družina who stayed behind heard only silence. “It was only at twilight that a Russian ‘hurrah’ was heard, and the whole Twenty-Eighth Regiment went over to the Russians without a shot fired,” said Wuchterle. Only the Austrian artillery fired at the enemy, wounding several Czechs.
Accounts such as this have been characterized as exaggerations by some who point to reports of at least some shooting, but even official Austrian reports concede that the gist of Wuchterle’s eyewitness account is accurate. The debate about whether the men were indeed deserters “became the subject of one of the fiercest arguments inside the Austro-Hungarian army.” Reflecting official suspicion and anger, the entire Twenty-Eighth Infantry Regiment was officially dissolved. Whatever the real motives of the men of the regiment, the družina was perceived to have lured Czechs into Russian arms. And this incident, says one historian, “was the first clear writing on the wall. The Austro-Hungarian authorities, civil and military alike, should have noticed that the war was unpopular with the Czechs, and that it was likely to become more so the longer it lasted.”
On Christmas Day 1915 amidst shooting between Austrian and Russian trenches, the members of the družina on the Russian side began singing “Stille Nacht,” the German “Silent Night.” The Austrians stopped shooting. When they were finished, one of the Czechs shouted a holiday greeting at the Austrians, to which an enemy soldier replied, “Wir danken” (“We thank you”). Members of the družina then began singing “Silent Night” in Czech, after which Czechs on both sides yelled greetings to one another. In such modest ways, the družina worked its will.