of families sharing the responsibility for a crime committed by one of its members. Sobibor – extermination camp which began operations sometime during 1942 in the south of Poland near Lublin where approximately 250,000 Jews and other deported prisoners were murdered. Sonderaktion 1005 – ("Special action 1005"), also called Aktion 1005 ("Action 1005") or 'Enterdungsaktion ("exhuming action"). See above Aktion 1005. Sonderbehandlung – "Special handling" or "special treatment" – a euphemism for killing. Sonderkraftfahrzeug (Sd.Kfz.) "special purpose motor vehicle" – all tanks and other military vehicles were assigned an Sd.Kfz. number. Sonderkommando – "Special commando" – originally used mainly for actual special-task troops in the Waffen SS. However, the term was quickly put to facetious use at the concentration camps, labor camps, and death camps as the euphemism for the prisoner-laborers forced to do jobs like stoking the crematoria, shaving newcomers' hair, processing seized belongings, helping unload trains, and removing corpses from gas chambers. Such laborers were told they could live in exchange for their efforts, but were regularly killed off and replaced. When working in their civilian clothes, such laborers would at times wear a color-coded armband to distinguish them from new arrivals – perhaps one color for the crew unloading the trains and herding new arrivals to the undressing area, a different color for the crew that sorted belongings, etc. They might also wear the familiar striped prisoner suits similar to those used by the slave laborers. Digits appended to the word Sonderkommando denoted prisoner-laborers attached to a specific "special action". For example, see Sonderkommando 1005 in Aktion 1005 above. Work gang leaders were called kapos. Sprachregelung – a special language that masked the camp conditions and the policy of extermination. It substituted words like "extermination", "killing", "liquidation" with euphemisms such as "final solution", "evacuation", "special treatment", "resettlement", "labour in the East". The language was developed to deceive victims and help SS officials and others avoid acknowledging reality.(2) Sprechabend – closed Nazi party meetings. SS or – Abbreviation and emblem of the Schutzstaffel ("Protection Squadron"). See above: Schutzstaffel. SS- und Polizeiführer, SS and Police Leader – these powerful officials, reporting directly to Himmler, commanded all SS and police forces within a geographic region, which together covered the Reich and the occupied territories. SS- und Polizeiführer (SSPF) Höher SS- und Polizeiführer (HSSPF), Higher SS and Police Leader Höchste SS- und Polizeiführer (HöSSPF), Highest SS and Police Leader Stabschef-SA Chief