Army - arri
- army
- Army
- ARMY
- Army - wide Library Council
- Army acquisition executive
- Army acquisition objective
- Army Act
- Army administrative unit
- Army advanced forward area air defense system
- Army advanced marksmanship unit
- Army Advanced Materiel Concepts Agency
- Army advisory group
- Army aerial fire support
- Army Aeromedical Research Laboratory
- Army Aeronautical Depot Maintenance Center
- Army Aeronautical Research Center
- Army Aeronautical Services Office
- Army Air (Operations)
- Army air base
- Army Air Corps
- Army Air Defense
- army air defense area
- Army Air Defense Board
- Army air defense command
- Army Air Defense Command
- Army air defense command post
- Army Air Defense Commander
- Army Air Defense Control and Coordination System
- Army Air Defense Ground Environment
- Army air defense information service
- Army Air Defense Operations Office
- Army Air Defense Operations Officer
- Army Air Defense Program Plan
- Army Air Defense School
- Army air defense site
- Army air defense system
- Army Air Development Plan
- Army Air Forces
- Army Air liaison officer
- Army Air Mobility Research and Development Laboratory
