"Two brothers was going there" is a song about the Russo Turkish War. It describes two brothers coming back to home from the Turkish Front. It's sung by Victor Sorokin.
Kozaki are cool,my grandfather was one of rhem. He was fighting with Nazi's with his shashka,and after war,he lived almost 67 years. Вечная память героям!
Russian Russian-Turkish War of 1877-1878 is most likely the case, since "two brothers" can be deciphered as a Russian and a Serb. During this war, the Russian Empire liberated the Serbs, Bulgarians, Montenegrins and other Slavic peoples of the Balkans, who were under the yoke of the Turks