The ID Battery can refer to one of two specialists:
Being the only daughter and youngest child of five siblings, Erin Baker always had to fight to get her way.
Following in a family tradition of over 100 years of military service, she watched her brothers enter the US Army one-by-one, before finally graduating high school and enrolling herself.
Driven to excel by her ongoing rivalry with her older brothers, she volunteered for Airborne School, before crushing the Ranger Assessment and Selection Program.
Heavily armored, she fearlessly operates ahead of the front lines, nimbly traversing urban environments, as she destroys HVTs with salvoes of advanced high-explosive munitions.
- Erin "Battery" Baker - callofduty.fandom.com