General Dynamics C4 Systems (GDC4S), a wholly owned subsidiary of General Dynamics, tries to fight the "fog of war." The "C4" stands for command, control, communications networking, and computing. The unit makes communications and IT systems for military and business customers. Products include battlefield communications systems, combat search and rescue systems, ruggedized computers and displays (made by subsidiary General Dynamics Itronix), and encryption systems. Applications include air traffic control, radio and television broadcasts, and wireless communications. The US government is a major customer. General Dynamics in 2015 consolidated GDC4S and General Dynamics Advanced Information Systems into a unit called General Dynamics Mission Systems.
The consolidation leaves General Dynamics divisions with three units devoted to IT products and services. The others General Dynamics Information Technology (large-scale IT project management), and General Dynamics United Kingdom (systems integration partner to the UK Ministry of Defence).
The company operates from 15 US facilities and three in Canada.