About how the Red Hessians would choose during this conflict is heavily dependent on the faction leader of RHA (Which I think is the only existing official Red Hessian Faction - Please correct me if I'm wrong on that one.)
Which means - Blodo has alot of input in this matter.
So regarding the Red Hessians and their actions must be asked from Blodo.
And it's this what I like about factions in general, that they have the power to mold the roleplay. (But lets not turn this into a faction discussion, just a quick statement.)