Story highlights A US official also told CNN that an additional soldier was wounded during the firefight

Achin District is the primary base of operations for ISIS in Afghanistan

(CNN) Two US service members were killed and another was wounded Thursday while conducting a joint US-Afghan raid in the Achin District of Nangarhar Province, Pentagon spokesman US Navy Capt. Jeff Davis told CNN.

The operation was targeting ISIS-K, the terror group's Afghanistan affiliate. A US official told CNN the wounded soldier's injuries are not considered life-threatening.

The Pentagon identified the two slain soldiers Friday as Sgt. Joshua P. Rodgers, 22, of Bloomington, Illinois, and Sgt. Cameron H. Thomas, 23, of Kettering, Ohio. They were assigned to 3rd Battalion, 75th Ranger Regiment, based in Fort Benning, Georgia.

"The fight against ISIS-K is important for the world, but sadly, it is not without sacrifice," said Gen. John W. Nicholson, commander of US Forces-Afghanistan. "On behalf of all US forces and our coalition partners, I offer our deepest sympathies to the families, friends and fellow service members of our fallen comrades."

Achin District is the primary base of operations for ISIS in Afghanistan and has been the site of multiple joint US-Afghan counterterrorism missions. A US Army Special Forces soldier was killed fighting the terror group there earlier this month.

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