Hello: We are looking to adopt a daughter but don't know how to start!?

My husband and i will be 20 and 22 in 5 months. We want more than anything to have a daughter. We have had 4 miscarriages and a chemical pregnancy. Also he is in the U.S. Army. we are having a problem with agencies saying we are to young and a military family is to unstable so we feel punished because he has decided to serve his country. We were told my agency's that our best bet would be adopt a child from a pregnant teen hoping to adopt. But i don't know where to start. We are currently stationed in Germany, so its a little hard to do anything stateside at the moment. So i'm looking for someone that might be abe to help us. Please don't tell us to give up or we are to young. We have thought it through and we want more than anything to adopt a daughter!