Star Trek: The Next Generation (1987)

S4E12 The Wounded

Stardate: 44429.6. As the Cardassians begin to bolster their military might, a Federation Captain decides to take preemptive action to neutralize a looming danger. In a twist of fate, Captain Picard finds himself defending the Cardassians, aiming to thwart a rogue faction intent on committing mass violence against civilians.