Final answer:
The expeditionary geobase enables and sustains capabilities acquired at home stations through training by providing mobile and self-sufficient support functions in remote and austere environments.
Step-by-step explanation:
The expeditionary geobase enables and sustains capabilities acquired at home stations through training by providing a mobile and self-sufficient base for military operations in remote and austere environments. It offers essential support functions such as communication, transportation, housing, and logistics to ensure the smooth operation and effectiveness of military units deployed on expeditions. By having a geobase in place, the military can maintain and enhance their abilities acquired through training even in challenging and unfamiliar locations.