The Serrano Legacy

The Serrano Legacy, also known as Familias Regnant, is a series of military science fiction / space opera books by Elizabeth Moon. The series includes seven books total (a trilogy and two spin-off duologies), published from 1993 to 2000, and portrays a society in the distant future where the Familias Regnant serves as the governing body for an area of the galaxy. The books feature female lead protagonists—daughters and aunts, following the story of an entire family, including unique family dynamics. The books "depict women in the military who have a greater aptitude for command than the military men in their lives". The universe of the books is also ethnically diverse.