In Battlecry, not all units behave the same way. Some units come with special mechanics.
Destruct units are units that can be destroyed during battles. This means you may lose them permanently after combat, so they need to be used carefully.
Pillage units, on the other hand, cannot be purchased. These are special units that can only be obtained by completing Operations. They are often valuable and can give you an edge in battles.
Understanding when to use these units is important, as they can impact both your strategy and long-term resource management.