I am afraid I cannot answer your questions but I did have a suggestion for you.
Try internet searches for Kaiserslautern Waisenhaus (that is the word for orphanage in german).
Here is a german phonebook online:
http://www.dastelefonbuch.de
do a search for Waisenhaus. Unfortunately Waisenhaus is also a surname so you will have to sift carefully. Anything with Kind, Kinder or Jugend in the name is probably what you are looking for (these are the words for child, children or youth in german).
For translating pages from german try
http://babelfish.altavista.com - it is not perfect but it can help you get the gist of what is written (if you don't read german).
You might try contacting the base where you were adopted to see if they might have any records.
Check if there was any church involvement that might give you more leads.
Good luck in your hunt. I hope this helps! ;-)