By foot soldier I don't mean Moloch was insignificant what I mean is I think Moloch was just a general maybe not even a general any way he's likely one of many of whatever his rank is and he will likely be replaced by another general. That's what I think will happen that or when he died he just went back to hell and is making his way back to purgatory if he wasn't merely sent back to purgatory in the first place.
Still I wouldn't be surprised if Moloch followed a chain of command or something. It's also possible his death will some how unleash all the four horsemen that would be a twist.