«Проща́ние славя́нки» (English: Farewell of Slavianka), a Russian patriotic march, written by the composer Vasily Agapkin in 1912. Slavyanka means "Slavic woman". The melody gained popularity in Russia and adjoining countries during World War I, when the Russian soldiers left their homes accompanied by this music.
Such a wonderful, powerful, and touching song. This version, a duet of a male and a female, brings tears to my eyes. I always respect the people who are patriotic and proud of their homeland, in a good and wholesome way. Besides, I love a certain Slavic woman. So this is dedicated to my angel and her Motherland. Be safe and blessed! （＾—＾）
In my video, I used the old clips filmed by war cameramen. I have matched the clips with the lyrics.