the song is about a cossack, who was injured on the war by a commisar. He came back to his home on one leg, but later commisar showed up and stole hero's horse and wife. Then the guy burnt his house, took his gun and gone to the forest. Not well known fact, but it was written by some soviet punks, not actual cossacks and many people think it's old folk song. That was the original last verse of the song is uncertain, but it was telling that the guy became highwayman.