Nadia Larkin

From Memory Alpha, the free Star Trek reference.

Lieutenant Nadia Larkin was stationed on planet AR-558 during the Dominion War. She took over command of the troops stationed there after 107 of her fellow Starfleet officers were killed , including commanding officers Loomis and Parker. She was later killed by Jem'Hadar phaser fire which also knocked down Nog. (DS9: "The Siege of AR-558")

Nog later experienced flashbacks of Larkin's death. (DS9: "It's Only a Paper Moon")

Nadia Larkin was played by Annette Helde.

According to the Star Trek: Deep Space Nine Companion, Larkin's last name is a homage to Harry Guardino's character of Sergeant Larkin in the film Hell Is for Heroes.