That's right. The position of the regiment commander of 250 Ace Mecha Clan didn't land in other people's hands. Ling Lan was still the regiment commander.
She was able to continue being the regiment commander because her father worked really hard to help her keep this position. Since Ling Lan didn't want to leave the military, Ling Xiao would get what Ling Lan wanted even if he had to offend everyone in the military.
Plus, this position rightfully belonged to his daughter. Hence, when he fought for the position, he was very confident that he would give her what she wanted. His daughter risked her life to protect the people and the mecha clans, so how could he let other people take over what was rightfully hers?
However, Ling Xiao didn't really win too. His actions caused the higher authorities to make the ultimate decision which ended in both sides having to suffer losses.
