C: Charlie
C: Charlie Time Zone
C: Coastal
C: Confidential
C: Coniferous
C: Crisis
C&A: Certification and Accreditation
C&D: Cover and Deception
C&E: collection and exploitation
C&E: Communication and Electronic
C&GS: Command and General Staff
C&J: Collection and Jamming
C&LB: Coasts and Landing Beaches
C&M: Care and Maintenance
C&P: Characteristics and Performance
C-C3: Counter Command, Control and Communications
C-E: Communications Electronics
C-E: Communications-Electronics
C-HUMINT: Counter Human Resources Intelligence
C-IED: Counter-Improvised Explosive Devise
C-IMINT: Counter Imagery Intelligence
C-in-C: Commander-in-Chief
C-LAMP: Community Laser Measurement Program
C-MASINT: Counter-Measures and Signature Intelligence
C-NAF: component-Numbered Air Force
C-P: Counterproliferation
C-QUIP: Combined Quarterly Intelligence Production Listing
C-RISTA: Counter-Reconnaissance, Intelligence, Surveillance and Target Acquisition
C-SIGINT: Counter Signals Intelligence
C/JTF: Combined/Joint Task Force
C/MC: Command Master Chief
C/No: Carrier to Noise
C/S/A: CINC/Service/Agency
C/SSR: Cost/Schedule Status Report
C/W: Crisis/Wartime
C²: Command and Control
C³: Command, Control and Communications
C³CM: Command, Control and Communications Countermeasures
C1: Combined Staff Personnel Officer
C2: Combined or Coalition Forces Intelligence Staff