We kept practicing the formation, its less practice and more like memorization as people can't learn battle formation in one day, no matter how much they try.
So, Rachel's only option is to teach us 'what to do when that happens.'
We practiced fighting solo, in teams, helping our teammates when the monster is powerful and how to save the life of the self and our teammate's life when the corporal level monster shows up and there is no.
She taught many tricks and technique of teamwork and coordination, that will really help in a battle against monsters.
As we were practicing many tricks and technique, Rachel started to give us information about the forest that really shocked me.
She said that this forest is infected with some kind of foreign energy that made monster inside this forest stronger and ferocious.
That they will attack outsiders at the sight and we will encounter hordes of monsters after we enter the core of the forest.