What I struggle with...

So the thoughts that I struggle with lately is the fact that I will most likely have a career in the military as an officer, more than likely ill be an infantry officer.But this is what plagues me... Its not the thought of dying I fear so much I mean its there but its not over bearing...the thing that consumes me is that if I make a mistake it could cost another persons live in which i would be responsible for that...As my father states when lieutents and captains make mistakes young men die...I dont want to make a mistake that would lead to anothers death..so i need to figure out how to deal with this fear and over come it....