Hi, first of all thank you for taking the time to checking out our game :-) To clarify what you identified as a bug: Each unit consists of multiple vehicles. This is the number to the left below the unit (unit size). Unlike other games, it's not just kill or no kill. You can accumulate 100 damage (condition) before losing a vehicle. The remaining damage will be stored in condition. Example: Your unit has 6 vehicles. You take 280 damage. Now your unit has 4 vehicles left and 20% damage. The next vehicle is lost if the unit suffers at least 80 damage. This is explained in the Gunfight chapter of the guide. Maybe not detailed enough. There is even one unit type that can repair itself.
When you play the second map, it's important to merge those damaged units (see reorganisation in the manual). Units below a certain size do less damage.
Having no music ingame was a design decision. Game sessions of larger maps can last quite long, and after some time repeating music may become annoying. Additionally there is a lot of feedback sfx which doesn't work well with music.
None of us is a native english speaker. We tried our best get a proper translation and used spellcheckers. Maybe we missed some errors. I checked the paragraph you mentioned. Can you explain to me what's wrong there? I didn't get it. Maybe you have other examples of errors you found?