Training with Sir Trenton was useful because Henry learned how to be strong; with Sir Alix, he learned how to conserve energy through form; however, with Sir Maximus, he learned speed and focus.
When he first began his swordsmanship journey, he held a lot of anxiety in his body like some kind of small animal preparing to get attacked by an apex predator. It made for sharp and quick, directionless movements.
Maximus tuned into this issue quickly and decided it needed to be addressed early so it wouldn't become a bad habit.
When Henry had built up his stamina, Maximus taught him how to control his breathing. With just one deep breath in and a deep exhale out, Henry felt like he could slow down time.
However, with the commander in front of him holding one of the largest one-handed swords he had ever seen in his life, all his fear came rushing back in.
If that sword was directed at him in any way, he was certain he would be instantly cut in half.