Hi Pink and welcome
I can feel your confusion and worry. It is not surprising that you are feeling this way right now, the move to Germany is stressful enough to make on your own but with children it must be very wearing and tiring. You appear to be saying that you followed your husband and made the move to be with him and now you aren't sure you did the right thing?
It is obvious that something isn't right or you wouldn't be asking for advice here. I get the feeling that there is an element of homesickness and that you want to blame your husband for the whole thing. That is normal of course, but are you sure that there wasn't a part of you that wanted to stay put and not move? Did you tell him your thoughts and feelings? You ask about your kids, well no-one can guess what is right for them but as a general rule a loving family that is complete rather than separated might be seen as the best option.It would be even more stressful for the father to be in one place and the children another? But then again the move and leaving friends and the comfort of familiar surroundings must have been taken into consideration already and the decision taken.
I would say that for the time being forget the other person, try and get things in perspective and talk to your husband. Presumably he wanted you all to make the move? And you both made the decision? Maybe time is what is needed here? It is one thing to up sticks and move but quite another to up sticks and move again. I am sure that if your husband cares for you and loves you he will be in a quandry too, wondering what is happening and what you are about to do? All I can sense is that there is confusion and worry. I don't get any indication that you would be better off alone. Have you tried to talk to him? Can you talk to him?
Take care,
Cassie