u/Dip2pot4t0Ch1P

So I just suddenly remembered a manga or a manhua that I have unfortunately accidentally forgotten about and I'm having trouble trying to remember the name. I vaguely remember that the world is medieval fantasy and the mc works in squad (don't remember if its like suicide squad kinda deal or just a regular foot soldier squad) . He isn't overpowered but fairly competent enough to stay alive as he said it himself. He is also known by the enemy army as a fire wielding soldier? He wears a mask as part of his fire-wielding soldier appearance to fight the enemy.