Final answer:
Fixed storage types are used in GCSS-Army to maintain consistent stock quantities between IM and WM bins.
Step-by-step explanation:
The storage types that are used by GCSS-Army to keep stock quantities constant between Inventory Management (IM) and Warehouse Management (WM) bins are referred to as Fixed storage types. Fixed storage bins have predefined material stock that does not change unless adjusted manually in the system. This remains constant, enabling a streamlined approach to inventory tracking within the GCSS-Army platform. Contrast this with Dynamic storage types, which are assigned to materials as needed without predefined bins. These allow flexibility in storage location, which changes based on the current space and inventory levels.