The military found that human error, compounded by equipment failures, led to the attack on a Doctors Without Borders facility in Afghanistan that killed 42 people.

Punishing 16, Pentagon Says Mistakes Led to Hospital Attack in Afghanistan – The New York Times

Ignorance changes nothing in the effects of one’s actions. Ignorance will never change the fact that people died and those people are lost forever. Especially when speaking of the military, ignorance is absolutely no excuse!!!