I installed now Battlefront again and it is really fun to play. Old times stuff.
Well so I downloaded the Bf1 modtools for it I dont want to build maps but would like to creat own sides. So I created a world but I cant figure out how to munge the sides.

Can you help me with that?

If you have the BFBuilder Pro application this will make it really easy. Download it from psych0fred's Battlefront board (http://www.secretsociety.com/forum/downloads/BF1/), unzip it straight into the BFBuilder folder, run it, open your map up in there, and choose Sides>Create new side. Or if you wish to import, choose Sides>Import Existing Side.

Otherwise, you'd have to go about modifying .bat files and things can go wrong.

Thanks works fine for me