Sometimes, you may be required to work out the 'Unit Strength' of a unit. There are a number of reasons you might need to know this, for example, to determine if one of your units is outnumbered by an enemy. Simply counting the number of models does not account for the sheer power of large and ferocious creatures. Unit Strength represents this well.
To determine Unit Strength, simply count the number of models currently in the unit and multiply this by the Unit Strength per model as shown on the Troop Type table.