How to plan a good attack on 1 hex

[Currahee]

I can't find anything in the manual about engineers reducing fort level, altho I believe it was in a prior manual; anyway, it seems to me to help, perhaps I'm imagining it.

But artillery bombardment is covered in the manual:

"ARTILLERY VS. ENTRENCHMENTS

"Artillery can lower the effectiveness of prepared defensive positions during combat. The effect is intended to model the earth churning tendencies of heavy artillery and is tied to the weight of individual shells. Heavier pieces are much more effective than lighter pieces. MRL's (multiple rocket launchers) generally do not receive this advantage. While the anti-personnel strengths of heavy artillery may seem weak (due to very low rates of fire), weapons of 150mm or larger can be very effective against entrenched enemies."