As the title says, on high difficulty several factions tend to die in the first turn, and I doubt that's desired behavior. Perhaps a wandering monster is destroying them? In any case it's something that needs a fix.
There are many great features available to you once you register, including:
Sign Up Now!
Copyright © 2017 Stardock Entertainment and Valve Corporation. Elemental: Fallen Enchantress and Fallen Enchantress: Legendary Heroes are trademarks of Stardock Entertainment. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. All rights reserved.