When an attack with this special rule hits a unit, chose up to X different ranks of this unit, the ranks resulting in the maximum amount of hits. For each rank selected this way: the unit suffers X hits, to a maximum equal to the number of models in this rank.
Some Area Attacks have a higher Strength and/or additional special rules stated in square brackets (such as Strength 3, [Multiple Wounds (D3)]). If so, a single hit from this attack uses the Strength value and special rules in brackets. The Bracketed values and special rules are not applied to any other hits.