What system is used as the primary solution for managing army supplies?

GCSS-Army serves as the primary system for managing army supplies, integrating logistics and supply chain management into a cohesive framework. This system enables comprehensive visibility and tracking of supply inventories across various units in the Army. It utilizes real-time data to streamline processes like ordering, receiving, storing, and distributing supplies, which is essential for maintaining operational readiness and ensuring that units have the necessary equipment and materials when needed.

The other systems, while important in their respective functions, do not serve as the overarching solution for army supply management in the same way that GCSS-Army does. LMP, for instance, focuses primarily on logistics support for the Army's acquisition and supply chain but does not encompass all logistical operations. MODS and SMR might fulfill particular functions within supply management or maintenance data logging but lack the comprehensive capabilities of GCSS-Army that integrates all aspects of supply chain management and logistics into a single coherent system.