What is the maximum limit that a military can reach while sustaining itself called?

The maximum limit that a military can reach while sustaining itself is termed "Operational Reach." This concept refers to the distance and duration across which a military force can effectively project power and sustain operations. It encompasses not only the physical ability to move forces and maintain operations at a certain distance from its base of support but also the logistics and support necessary to sustain those operations over time.

Understanding Operational Reach is crucial for military planners as it influences strategy, tactics, and the allocation of resources. A force's operational reach is determined by various factors, including logistics capabilities, supply lines, transportation assets, and the overall readiness of the force. The effective management of these elements allows a military to extend its operational influence while ensuring that it can maintain combat effectiveness within that span.