Council/Brigand/Maquis forces use this vc for the fight: https://discord.gg/yGsjYMC (Council Discord)
I encourage you to join vc, even if you wont talk. Communication makes everything easier.
Since we don't have any MRG reps, I don't know where the GRN side plans to gather. Whoever plans to be in charge of organisation the GRN forces will need to take care of that.