The combination of U. S. Marine Corps operating tempo and extreme environment often leads to extensive equipment damage due to corrosion and wear.  Resulting maintenance burdens detract from readiness and operational capability of the Marine Corps.  Due to the link between Marine Corps systems maintenance and material degradation, most frequently manifested as corrosion, there have been several efforts to determine the Corrosion Costs associated with Marine Corps equipment.  A recent study completed by LMI Government Consulting for the Office of Secretary of Defense looked to compile a high-level overview and the total corrosion cost associated with Marine Corps ground equipment.  The current study adapted a methodology developed by NSWC Carderock to determine the cost of corrosion for U. S. Marine Corps ground vehicles and selected support equipment.  Following the work completed by LMI and NSWC Carderock the current approach uses values obtained through U. S. Marine Corps maintenance information management systems: Marine Corps Integrated Maintenance Management System (MIMMS), the Supported Activities Supply System (SASSY), Asset Tracking Logistics and Support System (ATLASS II+) and the Marine Corps Equipment Readiness Tool (MERIT).  These systems combined contain the most comprehensive records of maintenance and repair actions performed on operating assets.  Components contributing to maintenance costs either in individual item cost, cumulative quantity cost, labor cost or excessive downtime have been collected and prioritized for root-cause failure analysis.  In conjunction with the Office of Naval Research Code 30 Logistics Thrust, S&T efforts targeted at component material improvements that could reduce maintenance downtime and repair costs due to corrosion and wear are being pursued.