A former British paratrooper went on trial Monday at Belfast Crown Court on charges of murder and attempted murder for his alleged role in the Bloody Sunday shootings that left 13 unarmed civil rights marchers dead in Londonderry on Jan. 30, 1972.

The defendant, identified only as "Soldier F," is charged with two counts of murder in the deaths of James Wray and William McKinney and five counts of attempted murder for the shootings of Joseph Friel, Michael Quinn, Joe Mahon, Patrick O'Donnell and another person whose identity is not known. He has pleaded not guilty. He was shielded from view in court by a blue, floor-to-ceiling curtain as a security measure.

The Jan. 1972 shootings in Londonderry, which occurred amid the three-decade conflict known as the Troubles, have remained a focal point of Northern Ireland's search for accountability and reconciliation. British soldiers opened fire on a civil rights march, killing 13 people and wounding 15 others. The killings prompted immediate controversy and decades of inquiry, legal challenges and political fallout.

An initial government inquiry cleared the troops of wrongdoing. A much longer review concluded in 2010 reached a sharply different finding, saying soldiers had fired at people who were unarmed and running away and that there had been deliberate attempts to conceal the truth. Then-Prime Minister David Cameron apologized for the killings, calling them "unjustified and unjustifiable," and the findings paved the way for potential prosecutions.

The path to the current trial has been protracted and legally complex. Police investigations opened years ago and prosecutors announced in 2019 that only one former soldier, identified as Soldier F, would face charges. They said there was insufficient evidence to charge 16 other former soldiers and two alleged members of the Official Irish Republican Army who were investigated in connection with the shootings. Shortly after, the Public Prosecution Service withdrew the case, citing concerns it could not succeed at trial after a judge excluded key evidence in a related prosecution. The decision was overturned on appeal by family members of one of the victims, allowing the trial to proceed.

Family members and survivors, who began campaigning for justice in the 1990s, have long sought three outcomes: a declaration of innocence for the dead and wounded, repudiation of the initial inquiry's conclusions and prosecution of those responsible. "The first two demands have been met," said Tony Doherty, whose father, Patrick Doherty, was killed on Bloody Sunday. "When a British soldier stands in the dock on Monday ... we will see the third demand met, although we will always believe there should be many more on trial for Bloody Sunday. We have waited 53 long years for justice and, hopefully, we will see a measure of it through this trial."

The trial is being held without a jury, a measure occasionally used in Northern Ireland for cases where there are concerns about jury intimidation or community tensions. The Ministry of Defence has said it will defend the former soldier and is working on reforms to the system that investigates allegations of historical military wrongdoing.

Supporters of veterans argue soldiers who served during the Troubles have been subjected to relentless investigations long after their service ended. Critics of the state response say the prosecutions — and long delays in delivering them — are part of a wider failure to hold those in authority to account. "The British government has sought to protect its parachute regiment killers for decades through lies, cover-up, delay and evasion," Derry Councilor Shaun Harkin of the People Before Profit party said, adding that the state itself should be held to account.

The 1998 Good Friday Agreement helped reduce large-scale violence by creating a power-sharing political system in Northern Ireland, but Bloody Sunday remains a potent symbol of grievances that persist. The trial of Soldier F is the first criminal prosecution arising directly from the 1972 killings; it will be closely watched by families of the victims, veterans, legal observers and political leaders and could take months to conclude as witnesses and evidence from events more than five decades ago are examined.

Court proceedings will determine whether the allegations against Soldier F can be proven beyond a reasonable doubt. Whatever the outcome, the hearing is likely to reopen long-standing debates about accountability, historical truth and how societies respond to past state violence.