For example, if I have 50 elite guards and 50 peasants vs. a dragon
I'll be likely to attack with two guards and two peasants for each
dragon strike. If I add 100 more peasants I'll now get (on average)
one guard and three peasant attacks per dragon strike. Since guards
and peasants will be killed closely in proportion to their original
ratios, this disadvantage will remain until the battle's conclusion.