Farming Route(s):
Deploy a Combat Echelon on the Command Post. Move down three nodes, and to the right one node. The final enemy will talk into your Combat Echelon on enemy phase, and the map will end thanks to surround capture.
External Links
For a video guide on farming this chapter, check out the below walkthrough by Ceia - while the method may differ slightly from the text walkthrough above, it works just as well and may even be better depending on your needs.