Video Source: https://youtu.be/BqXBOd4Cxuo?si=SPGXookb5mc9Ffwr
The Ion Core
"A radioactive device that damages enemies in a large area. Radiation pulses pass through walls, expanding from a small to large radius before dissipating and recharging."

— In-game description from Call of Duty Black Ops 7.

And this is much better and make sense than using the Trophy System from Vanguard that is made of Claymore Mines strapped together that is not even exist during WWII (Vanguard Timeline).