I’ve noticed many aspects of the game clearly show that your “armies” are really operating as single heroes, with word changes and extra images for the sake of pretending you’re fighting a war.
I’ll continue adding things below as other people mention them. So far, thanks to orrbit for his comment.
If each army is composed of troops, some of those troops die, and a “healer” restores the full capacity of the army… wouldn’t that make the healer more of a necromancer?
When one person misses, everyone misses?
One person in the army shoots an arrow dealing damage based on how many people are in his army, while the rest of the troops in his army watch?
When you find one item, all 5,000 troops in your army are suddenly equipping it, and as you gain more troops, they conveniently find more of the item as well, while you still don’t have enough of the items to give to two armies of 1,000 troops?
When your army gains troops, all of your troops, including the new troops, become more experienced, are promoted, and become stronger?
All of your melee troops manage to charge into an enemy army, kill thousands of their troops, and not a single one of your troops is lost in the process, until they attack and kill thousands of your troops, while your troops suddenly are unable to kill any of them?
Troops from the barracks are able to suddenly master the skills of any hero the moment they are recruited into any possible army, whether he’s fighting with any sort of magic, a bow, or whatever melee weapon?
Whether you’re fortifying items for an army of 300 troops, or an army of 9,000 troops, the blacksmith still takes the same amount of time?
