Content Indexes of the Ukrainian Combatant Periodicals as an Element of the Research of the National Liberation Struggle of the Ukrainian People in 1917-1921

This article analyzes the bibliographic indexes of the content of the Ukrainian combatant periodicals of the 2nd half of the 20th century , particularly the "Biuleten Soiuzu Buvshykh Ukrainskykh Voiakiv u Kanadi," "Visti Kombatanta," "Visti Bratstva Kolyshnikh Voiakiv 1 UD UNA". Ukrainian Editions of Combatants are periodicals of Ukrainian veteran associations, as well as Ukrainian government leaders of two periods of national liberation struggle: 1917-1921 and 1939-1956. In these publications, they recall and analyze past events and the causes of their defeats. The research aims to analyze the structure and summaries of the publications in the bibliographic indexes of the content of the Ukrainian combatant periodicals and identify materials on the history of the Ukrainian people's liberation struggle of 1917-1921. These indexes are not well known to contemporary researchers of the history of revolutionary times. The methodology of the research relies on principles of objectivity, systematic approach, and comprehensiveness in order to categorize indexes as a historiographical source. Analysis, synthesis, and comparison were used for the searching thematic sections and summaries. The importance of indexes of the content of such journals lies in the fact that their separate structural units and, accordingly, part of the descriptions o f publications are dedicated to the national liberation struggle of the Ukrainian people of 1917-1921 in the basin of the Dnieper River and Western Ukrainian lands. The topics of the publications can be divided into the following sections: the revival of Ukrainian military forces, their participation in the wars with Poland, Bolshevik and white guard troops of Russia; the battle of Kruty, winter campaigns of the UNR army, the course of the war in the regions and resistance movement, Unity of UNR and ZUNR; activities of Ukrainian diplomatic missions and prominent leaders.