[Rules] Assault Combat dice roll of 2 or 3.

[Champagne]

I am confused by the following Rule on the Assault Combat Chart. 

"On "2" or "3"result, assault causes 2 or 3 step losses (respectively) to each category."

I understand the part about Categories a and b. What confuses me is that the Rule seems to be asking us to ignore the Assault Combat Chart results listed for a 2 or 3 dice roll and instead to apply the Confusing Rule triggering a 2 step loss on a dice roll of 2 and a 3 step loss on a dice roll of 3. 

Aggravating the situation is the fact that there are no Examples of Play in the Rules for Assault Combat. 

How do I apply the Rule? Thanks.