Katyn Massacre Also Know As The Katyn Forest Massacre

The victims were murdered in the Katyn Forest in Russia, the Kalinin and Kharkov prisons and elsewhere. About 8,000 were officers taken prisoner during the 1939 Soviet invasion of Poland, the rest being Poles arrested for allegedly being "intelligence agents, gendarmes, saboteurs, landowners, factory owners, lawyers, priests, and officials." 

Since Poland's conscription system required every unexempted university graduate to become a reserve officer, the Soviets were able to round up much of the Polish intelligentsia, and the Jewish, Ukrainian, Georgian and Belarusian intelligentsia of Polish citizenship. 

The "Katyn massacre" refers specifically to the massacre at Katyn Forest, near the villages of Katyn and Gnezdovo (ca. 19 km west of Smolensk, Russia), of Polish military officers in the Kozelsk prisoner-of-war camp. This was the largest of the simultaneous executions of prisoners of war from geographically distant Starobelsk and Ostashkov camps, and the executions of political prisoners from West Belarus and West Ukraine, shot on Stalin's orders at Katyn Forest, at the NKVD headquarters in Smolensk, at a Smolensk slaughterhouse, and at prisons in Kalinin (Tver), Kharkov, Moscow, and other Soviet cities. 

The Belorussian and Ukrainian Katyn Lists are NKVD lists of names of Polish prisoners to be murdered at various locations in Belarus and Western Ukraine. The modern Polish investigation of the Katyn Massacre covered not only the massacre at Katyn forest, but also the other mass murders mentioned above. There are Polish organisations such as the Katyn Committee and the Federation of Katyn Families, which again are inclusive of victims of the various mass murders at the various locations.