Entering enemy territory costs extra action points. You can see these penalties by toggling the Hide Penalty button in the Map Layers bar.
Per the image, by using the high AP of a screening unit, the infantry are more quickly able to close the distance to the northern enemy units.

Another example:
The light armor battalion shapes a pocket for the main force to enter and begin surrounding the enemy. Because the terrain is unfavorable, the area has also been prepared with logistics to support the offensive.

[image width="100" height="50" alt="Test alt" title="Test"] https://www.matrixgames.com/forums/upfi ... EBB057.jpg[/img]