What term describes the membership of individuals undergoing military training and service in a part-time capacity?

The term that accurately describes the membership of individuals undergoing military training and service in a part-time capacity is Air National Guard. This organization consists of personnel who typically serve on a part-time basis while also pursuing civilian careers or education. Members can be called to active duty during times of emergency, disaster, or conflict but primarily serve in a reserve capacity, allowing them to balance military obligations with other aspects of their lives.

Active Duty Forces refer to those who serve full-time in the military, which does not align with the part-time service context of the question. The Reserve Officer Training Corps is a college program that trains students to become commissioned officers in the military upon graduation, but it does not specifically denote a membership status in a part-time capacity. The Army National Guard operates similarly to the Air National Guard; however, it is specifically related to the Army. Therefore, in the context of describing individuals serving part-time, the Air National Guard is the most accurate designation.