Thank you again. If you don't find anything. You're welcome. I thought that palanka means palisade. But I have to sure. Ottoman made this type of earthwork with wood and earth. I've found Turkish explanation but not enough for me. On the other hand I've wanted to ask you to Palanka mean to learning two sides point of views. Maybe they made the palisade was cheaper than fort or fortress. That's my answer. Your videos are very useful for me. I've learned new things for old wars, war formation, sieges and counter sieges other specific subjects.