Giants

A progressive alchemist by the name of Zagelforntz ran a series of experiments in an attempt to improve the potion of legendary proportions, but something went wrong. The soldiers who tasted his creation cannot return to their natural form and have grown quite dim. However, the alchemist assures everyone that no harm has been done since giants are more useful than ordinary soldiers. And the usefulness of intelligence in a soldier is debatable in the first place.