Sam gave them a choice because they came here on their own without any force or rules.
So, he gave them a chance to get out of here as they might regret it after the training started.
But from what he observed no one is willing to leave this place at all.
He doesn't know why, but he felt that these people are very much familiar with each other and are all here together and the decision seemed to be unanimous.
Sam didn't mind though. At least, there are hundred subordinates which he doesn't have to beat into shape.
The Next day, all the regiments are in a small-scale turmoil.
The Regiment commanders are thinking hard on who to get rid of and send them to the Sam's battalion.
But that is not entirely feasible because, the final say is based on the requirements Sam is going to provide.