Well blended into the Military. 

Episode 155- Well blended into the Military. 

The ride to the Military base didn't take that long and before they knew it, they were already in the base,  warming up together with the older soldiers. After Eugene and Aernest turned 7, they choose to fully train as a soldier and have officially relocated to the military base camp. It was difficult, however, because of their natural talent and superb learning ethics, they were able to earn themself a good spot in the military and be recognized for their outstanding growth rather than their name. 

Aernest's use of his ears was another important aspect of him being recognized in the military, although most people think that he is just sensitive to his surroundings and has a quick reflex. While Eugene didn't have anything special, people who train with her know that she is an important asset to the military and that… she was stronger than most people despite her age.