I know there are two of them on the map, Ithos & Devilmar. They give Level 7 units, i've only ever gotten bronze troops from them (Sentries,Scouts, & Myrmidons). I watched a YouTube video that said the possibility of getting gold troops is there when you hire from these camps. Can anyone confirm this?
It is RNG for what you get. So you could roll it five times and get five golden troops each time. Or you could roll it a thousand times and always get Bronze. That is the fun/annoying thing about nearly all Asian MMOs. RN-Jesus as it is often called, controls your fate when it comes to things like this. Pray to him/her often and who knows what will come of it. If you get bronze just use them as fodder when in enemy territory or raiding.