Why don't victims of US soldiers sue the families of the soldiers to bankrupt them completely?

In war you kill people and break things. Large things! Don't try to rationalize it unless you are there. Reality changes when you get shot at daily and you never know if today is your last day. You NEVER kill civilians, you don't cross that line, you kill the ENEMY! That keeps you halfway sane. Sometimes that line gets blurred and you cross it, not your fault, you'd rather not be there, that is the fault of War.