In the period of the Ukrainian National Republic Directory
, the forces that had come into being under the Rada (and which by and large had joined the uprising against the Hetman) remained at the heart of the army, although numerous new units were formed: the Volhynia Division (composed of the Hetman’s Nalyvaiko Regiment, the Galician Regiment, the Czech-Ukrainian Regiment, and others) and the Podilia Division, which was composed of various revolutionary groups that were active in Podilia—the Karmeliuk, Zalizniak, the Blackhoods (From December 1918 to the fall of the directory in late 1920, the Ukrainian Army was engaged in constant action. A critical point was reached in the autumn of 1919, when the main body of the army found itself near Chortoryia, in Volhynia, surrounded by Polish, Soviet, and White forces. The army broke up and resorted to partisan warfare against its enemies in the first of its Winter Campaigns
, before regular forces were put back together to assist the Poles in the invasion of Ukraine (part of the Soviet–Polish War) following the Treaty of Warsaw (21–24 April 1920). By the time the Polish and Soviet sides negotiated an armistice at Riga in September–October 1920, the Ukrainian Army had again been reduced to little more than 20,000 men. It prepared an offensive against Soviet Russia, but the Red Army began its own offensive, and after intense battles (11–12 November 1920), the Ukrainian Army retreated westward. It crossed the River Zbruch on 21 November 1920 and was interned by the Polish authorities. Nevertheless, military activity continued, with partisan attacks against Soviet bases in right-bank Ukraine (the “Second Winter Campaign”). The Bolsheviks, however, soon routed the units involved in these incursions and executed 359 of their fighters on 23 November 1921.After a long period of internment in the Polish camps (at Wadowice, Piotrków Trybunalski, Tuchola, Aleksandrów Kujawski, Łańcut, Strzałków, Kalisz, and Szczepiórno), the men of the Ukrainian Army were granted the status of refugees and were demobilized. The army staff continued to exist, as an institution subordinate to the government-in-exile of the UNR, although many commissioned individuals joined the Polish Army as “contract officers,” in the hope of a renewed attack on Soviet Russia by Poland. Various veteran associations flourished in émigré centers across Europe, the most active of which was the Society of Former Combatants of the Ukrainian Republican Democratic Army in France (established in 1927).