Accused war criminal Dukat
A war criminal was someone who was accused of committing a war crime.
Following the Battle of J'Gal in 2256 or 2257, Dak'Rah was condemned as a war criminal by the Klingons and the House of Ra'Ul received discommendation. (SNW: "Shuttle to Kenfori")
In an alternate reality, Nero was considered a war criminal after he destroyed the planet Vulcan and caused the deaths of six billion people. (Star Trek)
Khan Noonien Singh and his fellow Augments were condemned to death as war criminals, according to Alexander Marcus. (Star Trek Into Darkness)
Gul Darhe'el was considered by many to be a war criminal. (DS9: "Duet")
Worf and Ezri Dax were to be charged and executed by the Cardassians for being war criminals after being taken prisoner by the Breen in late 2375. (DS9: "Strange Bedfellows")
Dukat was accused of being a war criminal for his actions during the Occupation of Bajor. Kai Winn Adami once told him that she didn't forgive war criminals. (DS9: "Waltz", "What You Leave Behind")
As a part of the Treaty of Bajor, the Female Changeling agreed to stand trial as a war criminal for her actions during the Dominion War. (DS9: "What You Leave Behind")
In approximately 3074, all of the Kyrian evidence showed that The Doctor was a war criminal. The Kyrian reconstruction of the USS Voyager as the warship Voyager inside the holoprogram The Voyager Encounter was based on a partial, badly corroded schematic found in the Cyrik Ocean. (VOY: "Living Witness")