At the onset of the Second World War, it was noticed that equipment being shipped overseas to the frontlines arrived corroded. The Department of Defense rapidly escalated the use of corrosion inhibitors in packaging materials to reduce the severity of the corrosion of those assets. This paper provides an overview of vapor corrosion inhibitors, describes how they are incorporated into anti-corrosion covers, and summarizes field test results showing typical protection provided to Department of Defense assets. The paper describes the environmental conditions that warrant the use of anti-corrosion covers and presents independent ground vehicle focused return-on-investment analysis.