In response to the war crimes allegations in the 2018 series of articles, in January 2019 Roberts-Smith commenced
defamation proceedings in the Federal Court against Fairfax Media (a subsidiary of Nine Entertainment) and two Fairfax journalists, Nick McKenzie and
Chris Masters, as well as a former Fairfax journalist, David Wroe. Fairfax mounted a truth defence, based on its reporting being "
substantially true". As part of this, Fairfax detailed a series of six unlawful killings alleged to have been carried out by Roberts-Smith in Afghanistan, including those in Darwan. The defamation trial was labelled by lawyers and media as "the trial of the century". Kerry Stokes' private investment company, Australian Capital Equity (ACE), extended Roberts-Smith a line of credit to fund his legal action, against which he drew
A$1.9 million. In August 2020, it was reported that legal experts had raised concerns about a personal relationship between Roberts-Smith and his defamation lawyer, saying it could constitute unprofessional conduct by her. News Corp Australia published a photo of Roberts-Smith holding hands with the lawyer, who they reported was visiting him at his new apartment in Brisbane. The lawyer conceded that it was "unwise to spend time with him socially". On 1 September 2020, Fairfax/Nine Entertainment lawyer
Sandy Dawson told the Federal Court that the Australian Federal Police had information, including an eyewitness, that allegedly implicated Roberts-Smith in Afghanistan war crimes. The defamation trial, expected to last for ten weeks, commenced in June 2021 in Sydney. In November 2020, the Federal Court was told that Roberts-Smith and his wife had given inconsistent accounts about the status of their relationship during previous years. In April 2021,
The Age published an article alleging that Roberts-Smith had attempted to cover up the alleged crimes by hiding incriminating images on a USB drive buried in his backyard, which had since been obtained by the Australian Federal Police. In June 2021,
ABC News reported that 21 current and former SAS soldiers would make an "unprecedented" appearance at court to testify against Roberts-Smith in the defamation trial. The defamation trial was held in 2022. Submissions ended in June 2022 after 110 days of evidence during which 41 witnesses were called. Fairfax Media's defence against Roberts-Smith's suit concluded in early April 2022 after calling witnesses for eleven weeks. Among the witnesses were 32 Australian soldiers, of whom some had served alongside Roberts-Smith, as well as several civilian eyewitnesses from Afghanistan. According to the
Sydney Morning Herald, the soldiers "testified in public and on oath" but, due to national security orders, their identities were suppressed and they were referred to in court using pseudonyms such as Person 1, 14 and 18. Several serving members of the SASR provided testimony regarding bullying and threats made by Roberts-Smith during his service both within Australia and Afghanistan. "Person 1", a serving SASR member, said that Roberts-Smith had stated that he would "put a bullet in the back of his head" if he did not improve his performance. After this, Person 1 was advised by other members to report Roberts-Smith's threat which he did, leading to Roberts-Smith threatening him again, stating "If you're going to make accusations, cunt, you better have some fucking proof." Reports of Roberts-Smith's bullying were also reiterated by Person 43 and Person 10, other serving members of the SASR.
Judgment On 1 June 2023, Justice Anthony Besanko dismissed the defamation case brought by Roberts-Smith. Besanko found that the newspapers on trial,
The Sydney Morning Herald,
The Age and
The Canberra Times, had established substantial or contextual truth of many of their allegations, including that Roberts-Smith "broke the moral and legal rules of military engagement and is therefore a criminal". As a defamation suit is a civil proceeding, Besanko was required by the Evidence Act 1995 (Cth) to assess the evidence using the civil standard of proof, the
balance of probabilities, instead of the criminal standard of proof,
beyond reasonable doubt. Due to the gravity of the allegations, Besanko followed the
Briginshaw principle, which required stronger evidence than would be necessary for a less serious matter. Besanko found that four murder allegations against Roberts-Smith had been proven. The judgment concluded that it was substantially true that: • during the Whiskey 108 mission in 2009, Roberts-Smith committed murder "by machine gunning a man with a prosthetic leg". Roberts-Smith later asked other soldiers to drink from the prosthetic leg; • during the same Whiskey 108 mission Roberts-Smith committed murder "by pressuring a newly deployed and inexperienced SASR soldier to execute an elderly, unarmed Afghan in order to 'blood the rookie; It was ruled that two allegations of murder at Syahchow and Fasil in 2012 were not proven. and • Roberts-Smith engaged in a "campaign of bullying" and threatened violence against an Australian soldier. On 15 June 2023, Roberts-Smith stated that he was proud of his actions in Afghanistan and would not be apologising. Later in June, he accepted liability for payment of the legal costs of his failed defamation suit against the three newspapers from 17 March 2020. One respondent to the case previously stated that approximately $30 million was spent on successfully defending it. In December 2023, Kerry Stokes's private investment company, Australian Capital Equity, was ordered to pay costs. In 2023,
Kim Beazley, Chair of the Australian War Memorial Council, acknowledged "the gravity of the decision in the Ben Roberts-Smith VC MG defamation case and its broader impact on all involved in the Australian community". Beazley added that careful consideration was being given to the additional content and context to be included in collection items on display. Australian Prime Minister
Anthony Albanese commented that the decision to include Roberts-Smith had been made by the Palace and not the Australian government, although they had previously indicated to the palace that they had "no objections" to the making of the awards. In September 2024 it was reported by
The Sydney Morning Herald that Roberts-Smith had attended a recent Australian Defence Force gala dinner to celebrate the sixtieth anniversary of the SASR and that some who had served in the special forces found this inappropriate. The same article said that the Office of the Special Investigator could soon bring criminal charges against Roberts-Smith, including further alleged war crimes and other criminal matters.
Appeal On 11 July 2023, Roberts-Smith filed an appeal against Justice Besanko's judgment to the Full Court of the Federal Court after being granted an extension. Nine Entertainment said it would oppose the appeal. Commencing on 5 February 2024, the Full Court heard Roberts-Smith's appeal over ten days. Lawyers for Roberts-Smith filed an interlocutory application with the Federal Court on 27 March 2025, seeking to amend his appeal due to a secret recording of a conversation between Nick McKenzie and one of his sources. Roberts-Smith's lawyers sought "wide-ranging subpoenas" as part of the application to re-open the appeal, which Nine Entertainment's lawyers opposed, calling them a "fishing expedition". Justice
Nye Perram denied the majority of Roberts-Smith's subpoenas, allowing only subpoenas for communications between Nick McKenzie's and Nine Entertainment's lawyers, and between Roberts-Smith and a friend of his ex-partner. In court, Roberts-Smith argued that his ex-partner had accessed his email account and passed on
privileged communications to McKenzie. Roberts-Smith lost his appeal against Besanko's ruling on 16 May 2025. The Full Court of the Federal Court unanimously found that he was not defamed when Nick McKenzie and Chris Masters published reports alleging he had committed war crimes in Afghanistan. "We are unanimously of the opinion that the evidence was sufficiently cogent to support the findings that [Roberts-Smith] ... murdered four Afghan men" the court stated, ordering Roberts-Smith to pay the respondents' legal costs. Legal costs are estimated to have totalled $30 million for the initial trial and $4 million for the appeal. On 17 June 2025, Roberts-Smith sought special leave in the High Court of Australia to
appeal against the judgment of the Full Federal Court. On 4 September 2025, the High Court refused his application for leave to appeal and ordered that he pay costswhich will include the further cost of the application to the High Court. The Australian War Memorial subsequently updated its wording of his display which now states that he has exhausted all legal avenues to challenge to the defamation judgment.
Funding Roberts-Smith has been supported by some wealthy Australians. Kerry Stokes funded his original civil proceedings.
John Singleton paid for newspaper advertising which called attacks on Roberts-Smith "disgraceful". However, they accepted Rinehart's lawyers' assurance that she possessed no such documents. On 9 September 2025, the Federal Court ordered Roberts-Smith
together with Kerry Stokes's private company Australian Capital Equity to pay costs fixed at $13,270,950 to the media respondents, plus a costs assessment fee of $224,872 for the application for costs. == Public perceptions ==