Complex sentence: Bodies buried in the forest in mass graves found 1941 by Germans, (after their further invasion of the Soviet Union following later), who had been blamebeenassacre caused by attempt of Soviets to decimate effective anti-Communist leaders and intelligentsia for future post-war occupation.
Split into simpler sentences: Bodies buried in the forest in mass graves found 1941 by Germans, (after their further invasion of the Soviet Union following later), who were originally blamed. Massacre caused by attempt of Soviets to decimate effective anti-Communist leaders and intelligentsia for future post-war occupation.