Army & Military Abbreviations and Acronyms
- HHDHeadquarters and Headquarters Detachment
- HHSHeadquarters and Headquarter Services
- HHWHigher High Water
- HI-PARHigh-Performance Precision-Approach Radar
- HI-RESHigh-Resolution
- HICHigh-Intensity Conflict
- HICOMHigh Command (CINCPACFLT Voice Network)
- HIDSSHelmet-Integrated Display & Sight System
- HIFARHigh-Frequency Fixed-Array Radar
- HIFVHeavy Infantry Fighting Vehicle
- HILHigh Interest List
- HIMADHigh- To Medium-Altitude Defense
- HIMAGHigh-Mobility Agility Test Vehicle (US)
- HIMARSHigh-Mobility Artillery Rocket System (US)
- HIMSHumint Information Management System
- HIPHowitzer Improvement Program (US)
- HIREHughes Infrared Equipment
- HIRMSHuman Intelligence Requirements Management System
- HIROCCHawaiian Islands Regional Operational Control Center
- HISHuman Systems Integration
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