How do I use the Reserve Skill?

[Jacob Bell]

Originally Posted by slyrp

So I finally got the reserve skill in the Green tree. How do I use it? There doesn't seem to be a button anywhere to use it :/

Do I need troops of the same type in my reserve slot? Do I need to wait till turn 8?

yes you need the same type. They forgot to write it down in description of skill in skiltree