There is a optional objective choice in the Brick In The Wall mission. This Rescue Or Shoot The Operative In Call Of Duty Black Ops: Cold War guide will tell you what happens if you choose to rescue the trapped operative, or shoot him as he can’t be trusted.
This is during the main story mission, Brick in the Wall. After you meet your contact in the bar, she informs you that one of her agents has been caught and is currently being held captive in a nearby house. Once you reach the operative, he is tied to a chair in a room with three soldiers guarding his position. There is a dossier on the table, in the same room as the operative, that gives the appearance the operative may be working for the KGB.
Rescue Or Shoot The Operative In Call Of Duty Black Ops: Cold War
If You Choose To Recue The Operative
If you choose to rescue the operative, you untie him and tell him to await rescue. You leave the room with no further incident. Later in the mission, you are captured by your target. The operative is present and is clearly working for the enemy. The smarter choice here would be to kill the operative. The other agent, the person that you met in the bar, is killed during your capture.
If You Choose To Shoot The Operative
You can question the operative to see if the information about the KGB is legitimate. He pleads for his life and asks you to return him to his children. If you choose to kill him, you will have to shoot him in the head. He dies, no surprise there, and a loose end is considered tied up. When you are captured at the end of the mission, the outcome is the same, except the operative is not there and the other agent is not killed when you are captured.