They still needed to know if all the people in the small base were involved in such robberies, or only the group of people that were currently guarding the gates and had guided them, as Treyton and the others had already decided what to do for both situations.
If it's just a few groups in the whole small base, then they could just teach those few groups a lesson and would let the other people in the small base deal with them.
Other forces in the small base would surely take the chance to teach them more severely after knowing that they had suffered from them.
Of course, if the whole base was involved, then they had to teach the whole base a lesson and chase them away from the base that they had established.
