I recommend the novel "Interstellar Warlord" to you. The plot matches your description. The main character's father was a miner on Planet Kuang. He was a student at the military academy, and his name was Fang Yu. This novel was a digitized interstellar war genre novel. It described a large number of interstellar war scenes, including digitized warships, fighter jets, mobile fortresses, and so on. If you want to experience the hot-blooded interstellar expedition, hurry up and take a look! I hope you like this fairy's recommendation. Muah ~😗