
On August 13th, with Season Five, Collateral was added to Outbreak with a new objective, World Event, equipment, enemy, reward and intel as well as a new vehicle, the T-72. On June 17th, with Season Four, a new map, Zoo, was added into Outbreak as well as the second Main Quest and new rewards and intel.

On May 20th, with Season Three Reloaded, the first Main Quest as well as a new World Event and intel were added into Outbreak. With Season Three, a new map Duga was added into Outbreak as well as new World Event, reward and intel. On March 30th, with Season Two Reloaded, a night version of Sanatorium was added into Outbreak with a new objective, World Event, rewards and intel as well as a new vehicle, the Dirtbike. Taking place mostly in the Ural Mountains, sharing several Fireteam and Combined Arms maps, Outbreak features new enemies with rewards and intel for completing objectives and World Events. Outbreak is a large-scale Zombies experience featured in Call of Duty: Black Ops Cold War that was released on February 25th, 2021 as part of the Season Two of content for the game.

The Aetherium Arms Race is on." - Mission Briefing " This is Operation Threshold: Requiem's ongoing mission deep behind enemy lines in the world's largest Outbreak Zone.
