I went to leave the server as I was doing well,and I found there is no save option or autosave. I was frustrated because I lost all my minions. I think there should be a save option so you can stop playing and still have al your minions when you gat back.

A bit unfair while you can "dodge" hard moments on your tribes. 

They could still make it so that u can only save/autosave when 10 minutes have passed,or,oh I don't know,when no enemy units are near u and ur castle.

Definitely autosave, otherwise you could save when your tribe was at it's strongest, and then charge into battle just to come out un-wounded. 

yes this is a extremely good idea. I have had this same problem.