D: Deciduous
D: Delta
D: Delta Time Zone
D: Density
D: DIGITAL
D: Direct
D&D: Denial and Deception
D&M: Detection and Monitoring
D&SA: Depth & Simultaneous Attack
D&SABL: Depth & Simultaneous Attack Battle Lab
D-cell: deployment cell
D-NIF: Duties - Not Including Flying
D/A: Digital/Analog
D/DARO: Director, Defense Airborne Reconnaissance Office
D/F: Direct Finding
D/TWP: Director, Tactical Warfare Programs
D2: Data Distribution
DA: Department of the Army
DA: Direct Action
DA: double agent
DA: Long-Range Aviation
DAA: Defense Accreditation Authority
DAA: Designated Accreditation Authority
DAA: Designated Approval Authority
DAB: Defense Acquisition Board
DABM: Defense Against Ballistic Missiles
DABS: Dynamic Air Blast Simulator
DAC: Day After Contract
DAC: Department of Army Civilian
DAC: Development Assistance Committee
DAC: Discretionary Access Control
DAC: Divisional Ammunition Column
DACCO: Department of the Army Central Control Office
DACCS: Department of Army Command and Control System
DACCS: Digital Access Cross-Connect Switch
DACCS: Digital Access Cross-Connect System
DACOM: Data Communications
DACOS: Deputy Assistant Chief of Station
DACOS/I: Deputy Assistant Chief of Staff-Intelligence
DACRAE: Deputy Assistant Commander Royal Australian Engineers