Ok, so I had a battle in my English campaign, where I had 3 groups of militia spearmen, and Danish had 2 groups of horsemen. I won the battle, but in battle I lost one of my spearmen groups. Well, now that I sent them back to a city to get retrained, it says that I have 3 groups of spearmen, just a bit less than I had before the battle. Why is that? Why don't they really die, or is that some bug or something?