i know this is really stupid but i'm in Milkguard and i have just rescued the Princess now i have to return her to the Emporer. But i cant find him where is he??????

Is there another princess for rescue ? I only escout one in stage two i think.
Supposedly sending her to meet her boyfriend.
If thats the one, then you just need to follow the road.

Try keep that war machine alive. and go slow. Think thats all.