During the Irish Civil War, eighty-three prisoners were executed after trial by military court. The Irish Civil War: Law, Execution and Atrocity explores the pressures that drove the provisional government to try prisoners for arms offences by military courts, and how, at a time of great crisis, the rule of law evaporated and the new policy morphed into reprisal executions.
https://irishacademicpress.ie/product/the-irish-civil-war-law-execution-and-atrocity/