Hi -
just went through all this myself:
your husband has to give information on every city (though not if the different addresses within one city) he lived in since he was 16 for more than 6 months, yes! Don't leave anything out and make sure all the dates meet ends!
A German police certificate (Polizeiliches Führungszeugnis) covers all the places lived in Germany, so you do need only one. However, the guys at NVC don't always know that, so with your application, include a letter, explaining that. My first DS-230 was rejected because we did not think of that, so you can avoid trouble if you take care of that ahead.
After that happened, my lawyer contacted the U.S. Embassy in Frankfurt about the issue, and they did confirm that the German police certificate covers all places lived in Germany. Besides, I did contact the "Bundeszentralregister" and they were kind enough to also send me a letter confirming this. In my second application I did include all this, and it eventually (after they were losing my passporfotos and I had to send new ones) went through.
All the documents need to be in English or in German. However, you can avoid trouble by obtaining a "Internationale Geburtsurkunde" - (international birth certificate) from your local Standesamt - costs slightly more, but states everything in all common languages. (Praise to the EU ;-))
Concerning "accompanying persons" you only have to state the people who along with you also apply for a visa, such as your children etc. - since you (as the wife) are U.S. citizen that does not apply to you. Though, I don't think I would mention that you only join later, other than they ask for it. Avoids confusion.
Oh, and another advice: Make sure you have several issues of all original documents or copies you send in - they keep losing things and request extras - saves you time and trouble (though not money

;-) )
Good luck & lots of patience,
Julia
QUOTE(przy @ May 3 2008, 03:57 AM)

Hi fellow VJ members.....
I have a couple important questions regarding the DS-230 and Police Certificates and I'm hoping you guys can help me out.
Regarding Question #20 on the DS-230: First of all, if my husband lived in different cities of Germany (all in the north), would he have to list each city where he lived from the time he was 16? What if he can't remember exactly?
Secondly: Must he provide police certificates for each city he lived in, or did I read it correctly that it goes by country? So that would mean that he would only need the one police certificate from Germany?
Lastly: On questions 21a. and 21b. I am the US citizen I will not be joining him before of after his arrival to the USA. Would I simply just write none seeing as no one will accompany him to the USA?
Thanks for your help.
Kind regards and a wonderful weekend,
Przy