Arrested and interrogated six months by the Soviet NKVD , he was sentenced to eight years in Soviet forced labor camps and barely survived two years before being '' amnestied '' with other Poles by the Soviets after Hitler 's invasion of the Soviet Union ( June 1941 ) .
Arrested and interrogated six months by the Soviet NKVD , he was sentenced to eight years in Soviet forced labor camps . 
 He barely survived two years before being '' amnestied '' with other Poles by the Soviets after Hitler 's invasion of the Soviet Union ( June 1941 ) .