Fourth Wing - Rebecca Yarros

Originally planning for a quiet life in the Scribe Quadrant, Violet Sorrengail is instead forced by her commanding general mother to compete among hundreds of candidates to become a dragon rider in Navarre.

Because Violet is physically fragile and smaller than her peers, she faces immediate danger—not only from lethal dragons who incinerate weak humans, but from ruthless fellow cadets, including top wingleader Xaden Riorson, who want her dead. As a deadly war escalates, failing kingdom wards and hidden military secrets make survival an everyday struggle.