User blog comment:Argorrath/Treyarch releases a BO2 teaser video called "Origins" for DLC 4/@comment-3967954-20130807171131/@comment-5557418-20130807181233

The first guy: Takeo

The second guy: Nikolai

The third guy: Richtofen

The fourth guy: Tank

This is them in 1917, making them really young. :D