Some warriors are incredibly ponderous by nature, or else encumbered by massive weapons that slow them down.
Source: Warhammer Fantasy: 8th Edition
Always Strikes LastURL Copied!
A model with this special rule (or who is attacking with a weapon that grants this special rule) always strikes last in close combat, regardless of Initiative.
If the model with this rule is fighting an enemy with the same ability, the Attacks are made simultaneously. If a model has both this rule and, the two cancel out and neither applies so use the model's Initiative.