I would like to edit the startpos.esf to add more units.

I read the tutorials but nothing covers exactly this. The first problem is, I need a unit ID. Does anyone know how to create one?

I stole the ID from a unit I deleted (with the hybrid method) but now the game crashes (not during play but when I quit). This is probably just a symptom that something is not quite right. Probably I need to add the ID in other places too. Not just the "units array" tab...

Any ideas?