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 B… 
D-cell - deployment cell 
D-NIF - Duties - Not Including Flying 
D/A - Digital/Analog 
D/DARO - Director, Defense Airborne Re… 
D/F - Direct Finding 
D/TWP - Director, Tactical Warfare Pro… 
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 Authori… 
DAA - Designated Approval Authority 
DAB - Defense Acquisition Board 
DABM - Defense Against Ballistic Missi… 
DABS - Dynamic Air Blast Simulator 
DAC - Data Assembly Center 
DAC - Day After Contract 
DAC - Department of Army Civilian