How does one deal with sub-standard leaders?

I would make sure it is brought up to the chain of command/NCO support channel. If you do not feel comfortable addressing this person on the matter, then they can.

I was always told that " Iron sharpens iron" and we can help each other to sharpen ourselves as leaders.

unit tried to turn in co for not showing up for first three months to unit bout was punished.

report them to battalion if that doesn't work go higher up