I have some questions about the following things:
- [9.3] Explanation of retreats in combat results: the retreating unit cannot zigzag. What happens if it does not follow a straight line (but still ends up 2 hexes away from the defending hex) in order to satisfy all the conditions stated in the rules? (avoid EZOCs, enemy occupied hex, ending in friendly occupied hex, etc.) Would the retreat movement be legal or not?
They define "not zigzag" to mean that "each hex of retreat must take that unit a hex further from the defending hex)" so making a gentle turn (60 degrees) after the first move, so that it still ends up 2 away from its starting space, is fine. It doesn't have to move 2 hexes in a straight line.
- [10.2] Russian replacements: it is clearly stated that there can be no stacking in cities when the russian replacements appear. But what happens with the other type of terrains? Can several replacements appear in the same hex and obviously be stacked? I have this doubt because in [8.2.2] the rules state that there can only be one unit per hex at the end of each movement phase. As replacement comes before special rail movement then it could be possible to stack the replacement units in one rail hex and move them after just to end up with one unit per hex at the end of the special rail phase.
The rules say:
Newly placed Russian units (i.e., those being brought in from off the map) appear by being placed along the northeast, east, and southeast edge of the map, along the red border, in any empty hex not in an enemy Zone of Control – OR – in any empty, friendly controlled city ...
I guess you are thinking of placing 2 replacements simultaneously into a single empty hex? Interesting; I suspect the intent is that the replacements arrive sequentially, not simultaneously. Especially because of rule 8.22:
[8.2.2] Stacking: A unit can enter a hex containing a friendly unit, but there can only be one unit in a hex at the end of each Phase.
The Replacement Phase is a phase, so there can only be one unit in a hex at the end of it. So you couldn't put 2 new units into a hex in the Replacement phase.