War criminal
A war criminal was someone who was accused of committing a war crime.

In an alternate reality, Nero was considered a war criminal after he destroyed the planet  and caused the deaths of six billion people. () 

 and his fellow Augments were condemned to death as war criminals, according to . ()

Gul Darhe'el was considered by many to be a war criminal. ()

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. ()

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. ()

In approximately 3074, all of the Kyrian evidence showed that The Doctor was a war criminal. The Kyrian reconstruction of the  as the  inside the holoprogram The Voyager Encounter was based on a partial, badly corroded schematic found in the Cyrik Ocean. ()

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Illegal occupations