My nephew is a soldier, is my aunt considered a dependent?

Not necessarily. Military dependents refer to the spouses, children, parents and other relatives with legal custody and support relationships of active military personnel. Direct blood relatives, spouses, and younger siblings under the age of 16 who are dependent on active military personnel, or other relatives who have been raised by military personnel since childhood and now must rely on military personnel, that is to say, there is a support relationship between aunts and nephews. Those who were raised by aunts or aunts are considered dependents. In other cases, they are not considered military dependents.