Good evening, I’m new, so I’m not sure if I’m doing it right. but I have a question about Empires & Puzzles. Heroes can be upgraded or elevated, through other heroes. Is there anything you can do with your other troops? I have several troops now. but you can not sell or upgrade them. What can I do with the double troops? thank you in advance.
When you get your Stronghold to lvl10 you can convert a building(that is above lvl5) into a Barrack. That building allows you to upgrade troops as well.
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And hopefully this wiki will help you understand Barracks more and solve other questions as well 
https://sites.google.com/site/empiresandpuzzlesrpgwiki/intro/base/barracks
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