Expeditionary Command, Control, Communications, and Network Operations (C3N) refer to mobile, agile, and resilient communication systems that support military units in remote or hostile environments. Designed to facilitate mission command across dispersed locations, these operations prioritize quick deployment, adaptability, and secure communication in contested spaces. The aim is to enable forces to maintain situational awareness and execute operations despite limited infrastructure or potential electronic warfare.

In an expeditionary context, C3N operations are typically designed to be rapidly deployable, resilient to environmental challenges, and adaptable to various mission needs, from humanitarian assistance to direct combat support.