Quote:The provision "that neither side has an ENG" has to be an error, it should be if only the attacker doesn't have Engineers. Defenders Engineer shouldn't eliminate the attack penalty for the attacker.
I think the rationalization is that the defending engineers are likely involved in bridging and not able to help defend.
It's always irked me that the modifier is only for assault against a Major River. So defending along a Minor River is no different than defending in clear terrain in PG. Ideally the map takes this into account and adds Woods or Rocky terrain in Minor River hexes when applicable, but in general Minor Rivers don't seem to provide any defensive benefit in this system.
I do note that the Assault chart states "Major Rivers" while the Terrain Effects Chart lists the -2 on first round of assault without specifying Major or Minor. I've always applied it to Major only (figuring the assault chart takes priority), but perhaps I should be applying to Minor Rivers as well.