Final answer:
The subject of the question is Highlanders, referring to the highly capable soldiers who were recruited to help defend the colony of Georgia.
Step-by-step explanation:
The term that best describes the subject of your question is Highlanders. James Oglethorpe, George Dunbar, and High Mackay recruited 177 highly capable soldiers known as Highlanders to help defend the colony of Georgia. The Highlanders served as a militia force against Spanish and Indian threats in the region. They were an important part of the defense strategy for Georgia as a military buffer zone.