Did anyone notice AVF's in assault?

[triangular_cube]

In third, it was one of the many semi core rules that were included in most modules' special rule section. When it wasn't included in others it was left up to the user to determine if it was intended or an oversight, or what... I don't know to what level it is documented in 4th edition. Many of these game distinctions did not exist in the 2nd edition modules, although original BotB had a different Open Topped rule that made them sturdier than the current one. 

From the RtB scenario book because I have it handy:

"5.0 armored fighting vehicles: Self propelled artillery, Armored Cars, Tank Destroyers, and Open Topped Armored Vehicles do not provide the +1 AFV - Infantry column shift bonus in assault combat. They are treated as AFVs in all other respects."