Fragments are a special type of subunit created by a progenitor unit.
They are generally similar to the original unit, but roughly a third as strong in health and attack power. What makes them different from most subunits is their lack of a set lifespan. Despite being divided from a larger being, Fragments function like any other standard unit.
There are limitations to how many fragments can be made from a unit and once fragmented the pieces cannot be reintegrated.