I am a beginner and couldn't find a definitive answer to this question.
I know that winning a military challenge leads to killing off an opponent's character that he gets to choose himself.
However, in the rule book while it doesn't say that it needs not to be a participating character - it simply just says "a character under his control".
My question would be - that character has to be active and on the table or it could be a character in your hand? Because you do control those too I guess?
Thank you.