The main character saves the life of his sworn enemy Stepan Astakhov, whose wife Aksinia sleeps with the wealthy landowner Eugene Listnitsky.  
A computer study by Geir Kjetsaa showed that this work was not plagiarized from a novel by Fyodor Kryukov, as had been claimed.  The protagonist is modeled on Kharlampii Ermakov, who was executed in 1929.  A side plot centers on the agitator Bunchuk, who falls in love with the machine gunner Anna Poodko.  The main character saves the life of his sworn enemy Stepan Astakhov, whose wife Aksinia sleeps with the wealthy landowner Eugene Listnitsky.  Centering on the Cossacks near the titular river, FTP, identify this series of works about Gregor Melekhov by Mikhail Sholokhov.
A computer study by Geir Kjetsaa showed that this work was not plagiarized from a novel by Fyodor Kryukov, as had been claimed.  
And Quiet Flows the Don or The Silent Don or The Don Flows Home to the Sea or Tikhii Don