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Operation Last Chance

Operation Last Chance is a Simon Wiesenthal Center initiative that investigates suspected Nazi war criminals and collaborators and supports efforts to bring them before courts.

Last updated August 25, 2026

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Overview

Operation Last Chance is an investigative and public-information initiative launched by the Simon Wiesenthal Center in July 2002. Its purpose is to identify surviving Nazi war criminals and collaborators, develop evidence concerning their wartime activities and postwar immigration histories, and assist national authorities seeking prosecution, denaturalization, deportation, or other legal action. The name reflects the age of the principal suspects: by the time the project began, most potential defendants were elderly and the opportunity to obtain judicial findings was rapidly diminishing. The project has been associated especially with Efraim Zuroff, the Wiesenthal Center's Jerusalem-based director and its principal liaison in Israel for the initiative. Its work has involved investigators, attorneys, historians, journalists, and prosecutors. A recurring area of concern has been the alleged use of false statements, omissions, or forged accounts of wartime service in applications for immigration, citizenship, or naturalization in countries including the United States and Canada. In such cases, the initiative has supported legal processes that can proceed even when criminal prosecution is difficult, including the removal of citizenship or deportation of a person who concealed participation in persecution. Operation Last Chance became publicly associated with cases involving John Demjanjuk and John Kalymon. In the Demjanjuk matter, the project assisted efforts that eventually contributed to German proceedings concerning his alleged service as a guard at the Sobibor extermination camp. A Munich court convicted him in 2011 as an accessory to the murder of approximately 28,000 people, although he denied the allegations. Because Demjanjuk died in 2012 before his appeal was heard, the conviction was annulled and he was legally left without a criminal record under the relevant appellate ruling. The Kalymon case illustrated the initiative's immigration and denaturalization dimension. A United States federal court revoked John Kalymon's citizenship in 2007 after finding that he had concealed service in the Ukrainian auxiliary police and his involvement in persecution in the Lemberg ghetto. An immigration judge later ordered him removed, and the decision was upheld on appeal. German prosecutors issued an arrest warrant in 2014 alleging accessory liability for war crimes, but legal and practical obstacles prevented an interview or extradition. Kalymon died in June 2014 before trial. The initiative also publicized rewards for information leading to the arrest and conviction of former Nazis and collaborators. The reward was raised from $10,000 to $25,000 in January 2008, with particular attention to individuals who had worked in extermination camps or Einsatzgruppen, the mobile killing units responsible for mass murder in occupied Eastern Europe. A second phase, referred to as Operation Last Chance 2, was formally launched in December 2011 and continued the effort to locate remaining suspects and encourage information from the public. Operation Last Chance is not a commercial product brand. It is better understood as a campaign and investigative program operating under the Simon Wiesenthal Center's broader mission of documenting Nazi crimes, combating denial, and supporting accountability. Its work has produced leads and assisted proceedings, but outcomes have often been limited by the advanced age or death of suspects, evidentiary problems, jurisdictional restrictions, and the time required for appeals and extradition procedures.

History

Operation Last Chance was established by the Simon Wiesenthal Center in July 2002 as a late-stage effort to pursue surviving participants in Nazi persecution. The program emerged from the recognition that many suspected perpetrators were approaching the end of their lives, making timely investigation and prosecution essential. Efraim Zuroff, the Wiesenthal Center's director in Jerusalem, served as the initiative's Israeli liaison and overseer. The initiative's work has combined research into wartime records with cooperation or engagement involving prosecutors, immigration authorities, courts, journalists, and members of the public. Its targets have included people suspected of serving in concentration or extermination camps, mobile killing units, auxiliary police formations, transport units, and other structures involved in persecution. It has also focused on cases in which suspects allegedly obtained residence or citizenship in the United States or Canada by omitting or falsifying information about their wartime pasts. One of the best-known cases connected with the project was that of John Demjanjuk. Demjanjuk, who had become a United States citizen in the 1950s, had previously been acquitted by the Supreme Court of Israel of certain genocide and crimes-against-humanity allegations. He was later accused in Germany of having served as a Ukrainian auxiliary guard at Sobibor. In May 2011, a Munich court found him guilty as an accessory to the murder of approximately 28,000 people. Demjanjuk denied the accusations. He died in 2012 while his appeal remained unresolved; the appellate court later stated that the conviction had to be annulled because he had died before the appeal could be heard, leaving him without a criminal record under that ruling. The case of John Kalymon demonstrated a different legal route. In 2007, following action by the U.S. Department of Justice Office of Special Investigations, a federal court revoked Kalymon's citizenship. The court found that he had served in the Ukrainian auxiliary police and had concealed relevant facts when applying for immigration status and naturalization. The findings concerned his role in the persecution of Jews confined in the Lemberg ghetto, including a determination that he had killed at least one person and wounded another while serving as a Ukrainian policeman. In 2011, an immigration judge ordered him removed from the United States; appellate authorities affirmed the decision. German prosecutors issued an arrest warrant in 2014, but procedural complications prevented extradition or a completed interview. Kalymon died in June of that year before he could be tried. The initiative also became known for its public reward program. In January 2008, the reward for information leading to the arrest and conviction of former Nazis or collaborators was increased from $10,000 to $25,000. Appeals emphasized suspects connected with extermination camps and Einsatzgruppen, the mobile units responsible for mass shootings and other mass murder across occupied Eastern Europe. A renewed phase, called Operation Last Chance 2, was formally launched in December 2011. Other publicly discussed files included the case of Peter Egner, a Serbian Volksdeutsche collaborator who died in Washington State before a scheduled proceeding intended to challenge his U.S. citizenship. He had been accused by U.S. prosecutors of participating in genocide through service as a guard involved with mobile gas chambers and transports to Auschwitz, allegations he disputed while acknowledging membership in a Nazi-run security unit. The initiative's effectiveness has consequently been shaped by both legal progress and the recurring problem that suspects die before proceedings can reach a final determination. Operation Last Chance remains an accountability campaign rather than a commercial enterprise, and its principal outputs are investigations, referrals, public appeals, and support for legal proceedings.

  • 2014

    German arrest warrant issued for John Kalymon

    [1]

    Munich prosecutors issue a warrant alleging Kalymon's accessory liability for war crimes; he dies before trial.

  • 2011

    Demjanjuk is convicted in Munich

    [1]

    A German trial court convicts John Demjanjuk as an accessory to murder at Sobibor.

  • 2011

    Operation Last Chance 2 is launched

    [1]

    The Simon Wiesenthal Center announces a second phase of the campaign under Efraim Zuroff.

  • 2008

    Information reward is increased

    [1]

    The public reward for information leading to the arrest and conviction of qualifying suspects rises to $25,000.

  • 2007

    John Kalymon's U.S. citizenship is revoked

    [1]

    A federal court finds that Kalymon concealed relevant wartime conduct and removes his U.S. citizenship.

  • 2002

    Operation Last Chance is launched

    [1]

    The Simon Wiesenthal Center begins the initiative to locate and support the prosecution of surviving Nazi war criminals and collaborators.

Products and positioning

A Holocaust-accountability and investigative initiative focused on locating the last surviving Nazi war criminals and collaborators and supporting legal action against them.

Marketing campaigns

  • 2011Operation Last Chance 2

    Europe · United States · Canada · Israel

    A renewed phase of the campaign, formally launched by Efraim Zuroff, using continued investigation and financial rewards to obtain information about remaining suspects.

    Outcome. The campaign extended the initiative's public outreach and case-building work, but the advanced age of suspects continued to limit the number of completed prosecutions.

  • 2002Operation Last Chance

    United States · Canada · Germany · Israel · Europe

    A cross-border investigation and public-information campaign seeking evidence about surviving Nazi war criminals and collaborators and supporting legal authorities pursuing them.

    Outcome. The initiative contributed to or supported multiple denaturalization, deportation, investigation, and prosecution efforts, although several cases ended without final criminal judgments because suspects died.

Brand decisions

  • 2011

    Launch Operation Last Chance 2Strategy

    Background

    The initiative continued to face a shrinking pool of potential suspects and limited time for investigations and court proceedings.

    Action taken

    Efraim Zuroff formally announced a second phase focused on renewed investigations and reward-supported information gathering.

    Aftermath

    The second phase maintained the campaign's visibility and investigative mandate; no aggregate outcome is specified in the available reference material.

  • 2008

    Increase the public information rewardStrategy

    Background

    The initiative sought additional evidence about elderly former Nazis and collaborators, particularly people connected with extermination camps and Einsatzgruppen.

    Action taken

    The Simon Wiesenthal Center raised its reward for information leading to arrest and conviction from $10,000 to $25,000.

    Aftermath

    The higher reward strengthened the campaign's public appeal, although the source material does not establish a specific financial or prosecutorial result attributable solely to the increase.

    Information reward. $10,000 → $25,000 (January 15, 2008)

Sources2 sources

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