Daras

From Memory Alpha, the free Star Trek reference

Daras was an Ekosian woman and member of the Nazi party. Secretly, she was a member of the Ekosian and Zeon allied resistance, opposing the Nazi regime on Ekos in 2268.

At his wish, she turned her "traitor" father over to the Nazi party. For this she was awarded the Iron Cross as a "Hero of the Fatherland" and gained closer access to Deputy Führer Melakon. She helped Captain Kirk and Spock stop Melakon from launching his genocidal "Final Decision" invasion against the planet Zeon, and end the Nazi regime. To do so, she urged Kirk to order the Enterprise to intercept the Ekosian invasion fleet and destroy it as a last resort to stop the genocide. However, Kirk objected to that distastefully violent option and managed to get Führer John Gill to cancel the attack instead.(TOS: "Patterns of Force")

Daras was played by actress Valora Noland.