[Rules] Assault on dug in units

[leonard]

The sentence you quoted about negative column modifiers for dug-in units in assault was clearly imported from 3r Ed rules where it stands unchanged. However, the supposed dug-in modifier to assault is absent from the 3rd Ed Assault table, as well.
In 2nd Ed rules, it goes like this: [12.41] Column modifiers. All terrain modifiers, plus dug-in, entrenchment and bunker modifiers, only benefit the defender in the assault. [16.2] Digging In. After the Dug In marker is placed atop the unit, the unit gains all the benefits of being Dug In (see combat tables and First Fire under Assault).
However, the dug-in col mod in assault is nowhere to be seen on 2nd Ed Assault table...
Curiously enough, PG Modern rules which were based on 3rd Ed rules do not contain any reference to -1 dug-in col mod in assault (neither in words or assault table)... Since PG modern rules were written BEFORE 4 Ed rules, it is weird.
I'm arguing for a persistent error in the rules; a kind of involuntary oversight. Assault table(s) should be correct.