Information: Wikipedia

A Stolperstein literally "stumbling stone", metaphorically a "stumbling block" is a sett-size, 10 by 10 centimetres (3.9 in × 3.9 in) concrete cube bearing a brass plate inscribed with the name and life dates of victims of Nazi extermination or persecution.

The Stolpersteine project, initiated by the German artist Gunter Demnig in 1992, aims to commemorate individuals at exactly the last place of residency—or, sometimes, work—which was freely chosen by the person before he or she fell victim to Nazi terror, euthanasia, eugenics, was deported to a concentration or extermination camp, or escaped persecution by emigration or suicide. As of 29 March 2018, over 67,000 Stolpersteine have been laid in 22 countries, making the Stolpersteine project the world's largest decentralized memorial.

The majority of Stolpersteine commemorate Jewish victims of the Holocaust. Others have been placed for Sinti and Romani people (then also called "gypsies"), homosexuals, the physically or mentally disabled, Jehovah's Witnesses, black people, members of the Communist Party, the Social Democratic Party, and the anti-Nazi Resistance, the Christian opposition (both Protestants and Catholics), and Freemasons, along with International Brigade soldiers in the Spanish Civil War, military deserters, conscientious objectors, escape helpers, capitulators, "habitual criminals", looters, and others charged with treason, military disobedience, or undermining the Nazi military, as well as Allied soldiers.

Félix Luckhaus was a house painter and member of a resistance movement. Arrested on December 23, 1943, he was executed at Tir de Marcinelle on February 16, 1944 in retaliation for the murder of Captain Schaffler.

Robert Delahaye was a servant. He was a member of the Belgian Partisan army, took part in sabotage actions in the Charleroi region and was arrested in Marchienne-au-Pont on 28 December 1943 during one of these actions. He was responsible for the shooting of Carolingian Joseph Pevenasse, member of Rex's staff, who took an active part in the Tuerie de Courcelles in August 1944. Robert Delahaye was executed in Tir de Marcinelle on February 16, 1944 in retaliation. for the murder of Captain Schaffler.

Michel Wistliski and Frimeta Ginzberg his wife, born 05/01/1899 in Poland and deported by the XXIIIth convoy. She was assassinated at Auschwitz.

Her husband, Michel Wistliski born 03/15/1898 deported by the XXVI and last convoy and assassinated.

Fernand Blampain worked at ACEC, which led to his being deported to Germany for several months in 1943 for forced labor. Back in Belgium, he did not follow up with a new summons. He joined the Belgian Partisan army and distributed clandestine newspapers and leaflets. He also participates in various acts of sabotage and executions of traitors. While on a mission, Fernand Blampain was arrested on July 22, 1943 and executed at Marcinelle's TIR as a hostage on February 16, 1944, in retaliation for the murder of Captain Schaffler.