"Damaging enemies with gunfire will mark them for death, preventing regen for 5 seconds."
— Trait description.
Marked Target is a trait featured in Call of Duty: Infinite Warfare that is unlocked at level 36. It is exclusively available to the Phantomcombat rig. While using this trait, all damaged, but not killed enemies will be "marked for death", and will not regenerate health for five seconds after being damaged.